EEVblog Electronics Community Forum
General => General Technical Chat => Topic started by: RoGeorge on October 20, 2018, 05:40:07 pm
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https://abstrusegoose.com/578
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Pretty neat except for the password part, which even through tearing apart the underlying scripts, I can't find the password for, so either I am missing something obvious, or just stupid.
edit: found it out, as it turned out I was stupid.
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Cool.
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This was fun until the password stage. I tried all the obvious including 'hunter2' then decided this is no fun whatsoever and had a brief dip into the javascript but couldn't find anything worth my time so ended it there.
ETA: Did another run through and it's obvious what the password is, no digging through code needed. :-DD
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I spent some time, too, looking under the hood for that password. :horse:
Then I was :palm: :-DD
Interactive comics is something very original, never seen such a thing before.
As for the rest of the comics, Abstruse Goose is brilliant. I don't know anybody to be better. Look:
https://abstrusegoose.com/482
https://abstrusegoose.com/587
https://abstrusegoose.com/183
https://abstrusegoose.com/249
https://abstrusegoose.com/297
https://abstrusegoose.com/324
https://abstrusegoose.com/562
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One thing I did find, if you are particularly bored, is that the maze's collision detection is pretty broken, so if you just try at the right angle, you can go through all the walls, and even exit outside the map. After looking at the source code, as it turns out, it's actually using a raycasting engine, something pretty neat for JavaScript.
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Yet another xkcd?
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This is broken to the point of not doing anything on the various devices I tried it on. It seems to not cope very well with any blocking of any kind.
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Works OK for me on Mac OS Chrome 69.0.3497.100 with uBlock Origin. That blocked two Google syndication ads, so it doesn't seem like it's littered with crapware.
If you have Javascript disabled, well, it's a Javascript puzzle so yeah that's not going to work.
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Just Excel
https://www.youtube.com/watch?v=r9PLmtQZwmY (https://www.youtube.com/watch?v=r9PLmtQZwmY)
:)
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Plateau's Rotating Drops, Euler-Lagrange Equations and Bifurcations
Satisfying ^-^
https://www.youtube.com/watch?v=yC8rybHKVY8 (https://www.youtube.com/watch?v=yC8rybHKVY8)
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You got five days!
https://www.youtube.com/watch?v=HEfHFsfGXjs (https://www.youtube.com/watch?v=HEfHFsfGXjs)
::)
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https://www.youtube.com/watch?v=BQM_gbSbIug (https://www.youtube.com/watch?v=BQM_gbSbIug)
:D
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https://www.youtube.com/watch?v=97t7Xj_iBv0 (https://www.youtube.com/watch?v=97t7Xj_iBv0)
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That RCS thruster control mechanism was ingenious.
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This was fun until the password stage. I tried all the obvious including 'hunter2' then decided this is no fun whatsoever and had a brief dip into the javascript but couldn't find anything worth my time so ended it there.
ETA: Did another run through and it's obvious what the password is, no digging through code needed. :-DD
Yes same here, I rummaged around for the code in Javascript, ended up even finding some pages here:
https://abstrusegoose.com/sa-comics/578/scripts/login_scripts/login.js (https://abstrusegoose.com/sa-comics/578/scripts/login_scripts/login.js)
I looked and looked and ended up guessing the password anyways... I won't give away the secret, except to say we have read some of the same Sci-Fi books. ;) Still, just as an exercise I am still curious where the compare is being done to see where they stored the password (or are they doing it via calculation which would be a better way to obfuscate it rather than just a string).
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https://upload.wikimedia.org/wikipedia/commons/6/6b/SquareWaveFourierArrows.gif
(https://upload.wikimedia.org/wikipedia/commons/6/6b/SquareWaveFourierArrows.gif)
Arrows are the fundamental frequency plus the first five harmonics of a square wave.
Magenta dot is the sum of them. Blue dot is the ideal square wave. Looks funny.
;D
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The classic, https://xkcd.com/356/ ;D
Tim
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https://www.youtube.com/watch?v=RCi8MXWhdvY (https://www.youtube.com/watch?v=RCi8MXWhdvY)
:o
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Move along, move along, nothing to see here!
https://www.youtube.com/watch?v=Vwjcn4Vl2iw&t=523 (https://www.youtube.com/watch?v=Vwjcn4Vl2iw&t=523)
(experimental fun with microwaves starts at 8:43 - never before seen them all in one place)
^-^
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https://www.youtube.com/watch?v=RCi8MXWhdvY (https://www.youtube.com/watch?v=RCi8MXWhdvY)
:o
Wholly crap, I had no bloody idea at all that this was even near possible by any means at all.
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Move along, move along, nothing to see here!
https://www.youtube.com/watch?v=Vwjcn4Vl2iw&t=523 (https://www.youtube.com/watch?v=Vwjcn4Vl2iw&t=523)
(experimental fun with microwaves starts at 8:43 - never before seen them all in one place)
^-^
Classic stuff, I remember being taken to a Chemistry lecture at the Royal Institution while at senior school. The Christmas lectures were required viewing in our household.
I had forgotten Mr Coates, he was a permanent fixture at the Royal Institution lectures for many, many years! https://www.rigb.org/our-history/people/c/bill-coates (https://www.rigb.org/our-history/people/c/bill-coates)
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Vooom-Vooom-Vooom-Vooom! ;D
https://www.youtube.com/watch?v=W-6WYGnBMSU (https://www.youtube.com/watch?v=W-6WYGnBMSU)
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Filming the speed of light https://www.youtube.com/watch?v=7Ys_yKGNFRQ (https://www.youtube.com/watch?v=7Ys_yKGNFRQ)
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8) Party!
https://www.youtube.com/watch?v=B4EyQQ-Nubw (https://www.youtube.com/watch?v=B4EyQQ-Nubw)
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A bit of a mix of electrical, electronic, mechanical, 3d printing, machining and kinematics. This is the latest of a long series, episode #15. James does all sorts of projects, but this project is the most sciencey one IMO.
https://www.youtube.com/watch?v=KN4wAZHtbzc (https://www.youtube.com/watch?v=KN4wAZHtbzc)
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Qute Fourier visualization (interactive): http://www.jezzamon.com/fourier/index.html (http://www.jezzamon.com/fourier/index.html) :)
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"Aluminium has a relatively low melting point (660°C) but its boiling point (2470°C) is very high. The parabolic shape (funicular curvedes) which the wire takes on when it is heated ensures that the oxide shell does not break. When reducing the current, the wire always breaks." :o
https://www.youtube.com/watch?v=SbdwuuzzYqQ (https://www.youtube.com/watch?v=SbdwuuzzYqQ)
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Watch it to the end, full screen (35 seconds)
https://www.youtube.com/watch?v=I_88S8DWbcU (https://www.youtube.com/watch?v=I_88S8DWbcU)
Woobl ! ;D
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This rainbow is on fire! ;D
https://www.youtube.com/watch?v=T-bnHRaxiSQ (https://www.youtube.com/watch?v=T-bnHRaxiSQ)
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https://www.youtube.com/watch?v=VxMM4g2Sk8U (https://www.youtube.com/watch?v=VxMM4g2Sk8U)
::)
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Solving EQUATIONS by shooting TURTLES with LASERS
https://www.youtube.com/watch?v=IUC-8P0zXe8 (https://www.youtube.com/watch?v=IUC-8P0zXe8)
^-^
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https://www.youtube.com/watch?v=gQXUQRFNhUw (https://www.youtube.com/watch?v=gQXUQRFNhUw)
;D
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A hardware guy writing software:
https://www.youtube.com/watch?v=EumR6luhwME (https://www.youtube.com/watch?v=EumR6luhwME)
A software guy doing hardware:
https://www.youtube.com/watch?v=HMNZnNZA9U0 (https://www.youtube.com/watch?v=HMNZnNZA9U0)
If it didn't work, use SPICE:
https://www.youtube.com/watch?v=5W_FxUFvwwc (https://www.youtube.com/watch?v=5W_FxUFvwwc)
^-^
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Yet another Marangoni effect
https://www.youtube.com/watch?v=0h16Tyn2138 (https://www.youtube.com/watch?v=0h16Tyn2138)
:)
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Solving EQUATIONS by shooting TURTLES with LASERS
Thanks for sharing that video, this Mathologer guy is now one of my favourite channels to watch! Pretty cool stuff and he's funny for a mathematician! I just watched one where he talked about squaring triangles and how to prove certain square roots are irrational! Mind blown!
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Mathologer is my favourite maths channel, no competition.
https://youtu.be/qS4H6PEcCCA
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I'd have to place 3blue1brown higher, but it's hardly a competition, they're both well worth watching. :D
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Yeah, 3blue1brown is also quite good, very nice animations... ... if Mathologer is Batman then 3b1b is Robin. ;)
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SurfaceSight: A New Spin on Touch, User, and Object Sensing for IoT Experiences
https://www.youtube.com/watch?v=pLWdvpg8BMg (https://www.youtube.com/watch?v=pLWdvpg8BMg)
^-^
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https://www.youtube.com/watch?v=uxPdPpi5W4o (https://www.youtube.com/watch?v=uxPdPpi5W4o)
:o
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Thank ebastler for this one:
https://www.youtube.com/watch?v=0CEpT_A19qI (https://www.youtube.com/watch?v=0CEpT_A19qI)
:clap:
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https://www.youtube.com/watch?v=kocnm8xpoJc (https://www.youtube.com/watch?v=kocnm8xpoJc)
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Q: What's the most comfortable umbrella during rain?
A: A chain armor, of course!
https://www.youtube.com/watch?v=QoIfjLXVQ98 (https://www.youtube.com/watch?v=QoIfjLXVQ98)
;D
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You are never alone!
https://www.youtube.com/watch?v=YW2eGaUzq7E (https://www.youtube.com/watch?v=YW2eGaUzq7E)
:scared:
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https://www.youtube.com/watch?v=B-9LE6b-SYw (https://www.youtube.com/watch?v=B-9LE6b-SYw)
:o
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The Bulwer-Lytton Fiction Contest (https://www.bulwer-lytton.com/) challenges writers to write a really bad opening sentence for a novel.
2005 winner:
As he stared at her ample bosom, he daydreamed of the dual Stromberg carburetors in his vintage Triumph Spitfire, highly functional yet pleasingly formed, perched prominently on top of the intake manifold, aching for experienced hands, the small knurled caps of the oil dampeners begging to be inspected and adjusted as described in chapter seven of the shop manual. — Dan McKay
2007 winner:
Gerald began – but was interrupted by a piercing whistle which cost him ten percent of his hearing permanently, as it did everyone else in a ten-mile radius of the eruption, not that it mattered much because for them “permanently” meant the next ten minutes or so until buried by searing lava or suffocated by choking ash – to pee. — Jim Gleeson, Madison, WI
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Fun website where guy trained an AI to understand the relationship between 2000 images of cats and their line art equivalents.
You can draw a cat diagram and have the AI turn it into a real cat photo, or at-least try too :-DD
https://affinelayer.com/pixsrv/ (https://affinelayer.com/pixsrv/)
Note: On some computers the website doesn't work. I think it uses some CPU extensions not found in older processors, or maybe it uses CUDA for all the AI processing.
(https://www.eevblog.com/forum/chat/post-a-picture-of-a-cat!/?action=dlattach;attach=753666;image)
Go ahead and try to sketch you own cat. Be creative, even unconventional.
See? ;D
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https://www.youtube.com/watch?v=4Jvi7vfgSgQ (https://www.youtube.com/watch?v=4Jvi7vfgSgQ)
:D
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https://www.youtube.com/watch?v=eYga8cdUSnM (https://www.youtube.com/watch?v=eYga8cdUSnM)
8)
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https://www.youtube.com/watch?v=5WdLV3YRMvw&t=1100 (https://www.youtube.com/watch?v=5WdLV3YRMvw&t=1100)
If you want just to hear HAARP sounds, it's at minute 18:20 :)
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This was fun until the password stage. I tried all the obvious including 'hunter2' then decided this is no fun whatsoever and had a brief dip into the javascript but couldn't find anything worth my time so ended it there.
ETA: Did another run through and it's obvious what the password is, no digging through code needed. :-DD
Yes same here, I rummaged around for the code in Javascript, ended up even finding some pages here:
https://abstrusegoose.com/sa-comics/578/scripts/login_scripts/login.js (https://abstrusegoose.com/sa-comics/578/scripts/login_scripts/login.js)
I looked and looked and ended up guessing the password anyways... I won't give away the secret, except to say we have read some of the same Sci-Fi books. ;) Still, just as an exercise I am still curious where the compare is being done to see where they stored the password (or are they doing it via calculation which would be a better way to obfuscate it rather than just a string).
Any more clues for the password.
Having a hard time figuring it out. :( ???
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If we could just know the answer to everything, then we will know this password, too. ^-^
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A French dude during Napoleon times was trying to calculate how the heat spread in a metal plate. What could go wrong?
About quarter of millennia later:
- 5G
- mobile phones
- WiFi
- mp3, Photoshop, CGI special effect
- digital oscilloscope, SA, VNA
- MRI, NMR
- crystallography, LHC
- astronomical spectroscopy
- insert almost whatever here ...
The dude's name was Fourier.
https://www.youtube.com/watch?v=ToIXSwZ1pJU (https://www.youtube.com/watch?v=ToIXSwZ1pJU)
^-^
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https://www.av8n.com/physics/ (https://www.av8n.com/physics/)
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https://www.youtube.com/watch?v=k0B8N-rmce8 (https://www.youtube.com/watch?v=k0B8N-rmce8)
:-DMM
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Rename the attached video from ".webm.png" to ".webm" only, then play it.
Fun? OK.
;D
Now play it in a loop, while looking at the yellow wheel.
The yellow wheel turns, suddenly stops, then rotates again.
Who's locking the wheel?
:o
This is how it should look, but still, seeing it is mesmerizing.
Relativity of the observer at its finest.
^-^
[attachimg=2]
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https://www.youtube.com/watch?v=51usJ74pPP8 (https://www.youtube.com/watch?v=51usJ74pPP8)
:o
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https://www.youtube.com/watch?v=sd3xNHMUDUw (https://www.youtube.com/watch?v=sd3xNHMUDUw)
:)
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https://www.youtube.com/watch?v=1VPfZ_XzisU (https://www.youtube.com/watch?v=1VPfZ_XzisU)
Totally bamboozled! :o
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https://www.youtube.com/watch?v=sC4MjPKf3jY (https://www.youtube.com/watch?v=sC4MjPKf3jY)
Mastering Slavery 101 ::)
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https://www.youtube.com/watch?v=3PwAQZNLy0I (https://www.youtube.com/watch?v=3PwAQZNLy0I)
^-^
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https://www.youtube.com/watch?v=9Jrd5kJ-vTU (https://www.youtube.com/watch?v=9Jrd5kJ-vTU)
-
https://www.youtube.com/watch?v=EK32jo7i5LQ (https://www.youtube.com/watch?v=EK32jo7i5LQ)
???
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https://www.youtube.com/watch?v=mt3P9rJmIOQ (https://www.youtube.com/watch?v=mt3P9rJmIOQ)
And not to mention Iron Man, too! ;D
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https://www.youtube.com/watch?v=zy1BhVhpGN0 (https://www.youtube.com/watch?v=zy1BhVhpGN0)
Smokin' at 4:20! ;D
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"Everything is relative" bamboozles again:
https://www.youtube.com/watch?v=M4-L8UgPkOk (https://www.youtube.com/watch?v=M4-L8UgPkOk)
;D
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[attachimg=1]
:)
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https://www.youtube.com/watch?v=-bnBbHFfZ6k (https://www.youtube.com/watch?v=-bnBbHFfZ6k)
::)
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A one minute video puzzle:
https://www.youtube.com/watch?v=9fwzf1WtAE8 (https://www.youtube.com/watch?v=9fwzf1WtAE8)
:-DMM
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Very high resolution selfie of Curiosity on Mars (~10MB and 250MB): https://photojournal.jpl.nasa.gov/catalog/PIA23240
~10MB https://apod.nasa.gov/apod/image/1910/ClayCache_Curiosity_9990.jpg (https://apod.nasa.gov/apod/image/1910/ClayCache_Curiosity_9990.jpg)
:o
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https://www.youtube.com/watch?v=W65JhGY-z6Y (https://www.youtube.com/watch?v=W65JhGY-z6Y)
:)
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https://www.youtube.com/watch?v=4pxYVlgSzCg (https://www.youtube.com/watch?v=4pxYVlgSzCg)
:o
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https://www.youtube.com/watch?v=XXN9HjLJvdc (https://www.youtube.com/watch?v=XXN9HjLJvdc)
8)
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https://www.youtube.com/watch?v=K-Fc08X56R0 (https://www.youtube.com/watch?v=K-Fc08X56R0)
:o
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8) A new type of electronic component, the BiZen transistor:
[attach=1]
Circuit symbol for the Bizen (Bipolar-Zener) transistor showing the input which uses the quantum tunneling effect. (Image: SFN)
https://www.eetimes.com/document.asp?doc_id=1335216# (https://www.eetimes.com/document.asp?doc_id=1335216#)
https://hackaday.com/2019/11/23/new-part-day-the-bizen-transistor/ (https://hackaday.com/2019/11/23/new-part-day-the-bizen-transistor/)
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Stolen from de∫hipu:
:D
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https://www.youtube.com/watch?v=nIKhUizkXxA (https://www.youtube.com/watch?v=nIKhUizkXxA)
8)
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Lab with a quantum computer:
https://www.youtube.com/watch?v=1tbC3p1YYvU (https://www.youtube.com/watch?v=1tbC3p1YYvU)
(it only makes sense after reading their papers) ::)
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A real tale with spies and physicists and H-bomb plans lost in a train. 8)
https://phys.org/news/2019-12-hydrogen-secrets.html
Original article
https://physicstoday.scitation.org/doi/10.1063/PT.3.4364
Same content, PDF magazine scan
https://physicstoday.scitation.org/doi/pdf/10.1063/PT.3.4364
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https://www.youtube.com/watch?v=QRt7LjqJ45k (https://www.youtube.com/watch?v=QRt7LjqJ45k)
:o
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https://www.youtube.com/watch?v=_z-SUo2wP4I (https://www.youtube.com/watch?v=_z-SUo2wP4I)
^-^
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https://www.youtube.com/watch?v=pMjXAAxgR-M (https://www.youtube.com/watch?v=pMjXAAxgR-M)
:o
About the same info as text:
https://hackaday.com/2020/01/07/the-oldest-nuclear-reactor-natures-2-billion-year-old-experiment/ (https://hackaday.com/2020/01/07/the-oldest-nuclear-reactor-natures-2-billion-year-old-experiment/)
A photo of such a nuclear reactor
Oklo: Ancient African Nuclear Reactors
https://apod.nasa.gov/apod/ap100912.html (https://apod.nasa.gov/apod/ap100912.html)
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https://www.youtube.com/watch?v=99u53V7uDFY (https://www.youtube.com/watch?v=99u53V7uDFY)
:-+
Interesting paper about another subject, correcting RF leakage:
Scalar Network Analyzer Leakage Correction, by Ted Yapo
https://drive.google.com/file/d/132w56treJsABD6a_0f7Oilfb4Dvm1751/view (https://drive.google.com/file/d/132w56treJsABD6a_0f7Oilfb4Dvm1751/view)
published in https://journal.hackaday.io/current (https://journal.hackaday.io/current)
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[attachimg=1]
;D
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Old gems:
https://www.youtube.com/watch?v=EMO3dZAizb4 (https://www.youtube.com/watch?v=EMO3dZAizb4)
:)
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https://www.youtube.com/watch?v=dqMYWldfs_k (https://www.youtube.com/watch?v=dqMYWldfs_k)
:)
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Q: - What animal gives milk?
A: - The fly.
https://www.youtube.com/watch?v=odCtCote9U0 (https://www.youtube.com/watch?v=odCtCote9U0)
:o Tsetse fly.
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https://www.youtube.com/watch?v=k7s1sr4JdlI (https://www.youtube.com/watch?v=k7s1sr4JdlI)
Boston Dynamics' new year resolutions for 2020 are about making a business turn.
Better don't go into law enforcement, BD, don't go there. ::)
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https://www.youtube.com/watch?v=nrjbdohloSE (https://www.youtube.com/watch?v=nrjbdohloSE)
Waiting for the first Li-Fu battery in 3, 2, 1, ;D
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Shhhhh! Be vewy, vewy, quiet.
He's gonna say about some wabit.
:P
https://www.youtube.com/watch?v=ovJcsL7vyrk (https://www.youtube.com/watch?v=ovJcsL7vyrk)
-
https://www.youtube.com/watch?v=2UesaCcfI_8 (https://www.youtube.com/watch?v=2UesaCcfI_8)
Very nice cover
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[attachimg=1]
;D
States of Matter by David L. Goodstein
-
The "Deep Look" team is usually doing videos like this:
https://www.youtube.com/watch?v=t3gvx8UQiZA (https://www.youtube.com/watch?v=t3gvx8UQiZA)
now opening a new channel, "PBS Terra", about ANTARCTICA
https://www.youtube.com/watch?v=EvRAuy1ZmTc (https://www.youtube.com/watch?v=EvRAuy1ZmTc)
Subscribed! :)
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https://www.youtube.com/watch?v=feUPkMGACtk (https://www.youtube.com/watch?v=feUPkMGACtk)
:-DD
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Is Hell Exothermic or Endothermic?
https://www.albany.edu/faculty/miesing/teaching/assess/hell.html (https://www.albany.edu/faculty/miesing/teaching/assess/hell.html)
;D
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[attachimg=1]
;D
-
The opposite of Microsoft Office is Macrohard Onfire. :D
-
What comes after USA? USB.
;D
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Wanna see a rocket factory? :)
https://www.youtube.com/watch?v=o0fG_lnVhHw (https://www.youtube.com/watch?v=o0fG_lnVhHw)
https://www.youtube.com/watch?v=DQaPOIQLEUo (https://www.youtube.com/watch?v=DQaPOIQLEUo)
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[attachimg=1]
What value is that? :o
-
What value is that? :o
I don't know, but R3 is 470Ω.
(https://i.pinimg.com/originals/36/8c/4b/368c4b63a703cf186db0a6950ac1007c.jpg)
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(no Catgirls anime, Mousegirls for real) :D
The making of Mouse computer advertising:
https://www.youtube.com/watch?v=fnzyTOT-oDI (https://www.youtube.com/watch?v=fnzyTOT-oDI)
-
https://www.youtube.com/watch?v=SPeilSU4lz0 (https://www.youtube.com/watch?v=SPeilSU4lz0)
:o
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Without a Smith chart or a computer, can you do impedance matching and controlled attenuation in your head? :o
https://www.youtube.com/watch?v=geSDcollRos (https://www.youtube.com/watch?v=geSDcollRos)
;D
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Terahertz Geometric Diode 8)
https://phys.org/news/2020-04-one-way-street-electrons.html
Ratcheting quasi-ballistic electrons in silicongeometric diodes at room temperature
Science 10 Apr 2020:
Vol. 368, Issue 6487, pp. 177-180
DOI: 10.1126/science.aay8663
[attachimg=1]
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:wtf: Do Gods read Holy Books?
(https://d2r55xnwy6nx47.cloudfront.net/uploads/2020/04/Donald-Knuth_2880_Lede.jpg)
Quanta Magazine: The Computer Scientist Who Can’t Stop Telling Stories (https://www.quantamagazine.org/computer-scientist-donald-knuth-cant-stop-telling-stories-20200416/)
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Yet another idiot (me!) who tried to get the password from the scripts. |O
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A sharpie is 15 times thinner than a human hair. :o
https://www.youtube.com/watch?v=46DBNUfhATo (https://www.youtube.com/watch?v=46DBNUfhATo)
Meh, about 140 millionths of an inch (3.5\$\mu\$m). ;D
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Hopefully she doesn't keep this for long. I don't think that would do her ear much good.
-
https://www.youtube.com/watch?v=5f-JlzBuUUU (https://www.youtube.com/watch?v=5f-JlzBuUUU)
^-^
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A solar water pump with no moving parts :-+
https://www.youtube.com/watch?v=hiN3F_lq9fE (https://www.youtube.com/watch?v=hiN3F_lq9fE)
-
https://www.youtube.com/watch?v=p1PgNbgWSyY (https://www.youtube.com/watch?v=p1PgNbgWSyY)
8)
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Compared testing and choosing the proper light bulb: :-DMM
https://www.youtube.com/watch?v=9ZV5cGzR-YI (https://www.youtube.com/watch?v=9ZV5cGzR-YI)
-
https://www.youtube.com/watch?v=rEoc0YoALt0 (https://www.youtube.com/watch?v=rEoc0YoALt0)
-
Solder on Al with CuSO4 + NaCl + FeCl3 8)
https://www.instructables.com/id/Solder-Electronic-Components-on-Aluminum/ (https://www.instructables.com/id/Solder-Electronic-Components-on-Aluminum/)
https://www.youtube.com/watch?v=Z14aU-PaioA (https://www.youtube.com/watch?v=Z14aU-PaioA)
Or just skip the whole procedure and solder normally, straight on aluminium, like you would do when soldering on a normal copper PCB, except for aluminium soldering you need to keep the soldering point covered in oil, so the oxigen won't reach the aluminium to form aluminium oxide. Aluminium oxide is the one that prevents the solder to stick, and it forms almost instantly in air.
Put a drop of oil on the future soldering spot, scratch a little the aluminium surface under the oil drop in order to remove the invisible oxide, then solder under the oil blob. Solder has no problem sticking on unoxidized aluminium, and the drop of oil stays in the way of atmospheric oxigen to come in contact with the aluminium at the soldering spot.
I've tried soldering under a drop of motor oil and under a drop of cooking oil, both oil worked. Soldered this way on kitchen aluminium foil and on solid aluminium radiators. It works almost as easy as it were copper. Just don't use your best soldering tool, the oil will be hard to remove from the soldering tip. Use a sacrificial tip, or cover it in Al foil for protection.
-
Capiţa's Pendulum
https://www.youtube.com/watch?v=cjGqxF79ITI (https://www.youtube.com/watch?v=cjGqxF79ITI)
https://www.youtube.com/watch?v=5oGYCxkgnHQ (https://www.youtube.com/watch?v=5oGYCxkgnHQ)
:o
https://en.wikipedia.org/wiki/Kapitza%27s_pendulum (https://en.wikipedia.org/wiki/Kapitza%27s_pendulum)
Pyotr Leonidovich Kapitsa or Peter Kapitza (Russian: Пётр Леонидович Капица, Romanian: Petre Capiţa), Soviet physicist, Nobel Prize in Physics (1978) https://www.nobelprize.org/prizes/physics/1978/summary/ (https://www.nobelprize.org/prizes/physics/1978/summary/)
You probably never heard of his 1/2 of the Nobel Prize in Physics ("for his basic inventions and discoveries in the area of low-temperature physics"), because he was eclipsed by the two dudes that got the other 1/2 prize that year for scratching the pigeon's poop from their antenna in order to remove radio noises, and thus discovering the Big Bang! ;D
(Allan Penzias and Robert Woodrow Wilson "for their discovery of cosmic microwave background radiation.")
-
The cat is dead, long live the cat! 8)
https://www.youtube.com/watch?v=jDW9bWSepB0 (https://www.youtube.com/watch?v=jDW9bWSepB0)
-
https://www.youtube.com/watch?v=suH32X91sQE (https://www.youtube.com/watch?v=suH32X91sQE)
:o
-
https://www.youtube.com/watch?v=fcKYTUbIMQM (https://www.youtube.com/watch?v=fcKYTUbIMQM)
>:(
-
Triple Pendulum on a Cart
https://www.youtube.com/watch?v=cyN-CRNrb3E (https://www.youtube.com/watch?v=cyN-CRNrb3E)
-
https://www.youtube.com/watch?v=lLTfMLaX820 (https://www.youtube.com/watch?v=lLTfMLaX820)
Inside tales and unique items from the history of science/technology.
:popcorn:
He also has a very good 101 for metalworking and prototype building on his channel:
https://www.youtube.com/user/dgelbart/videos (https://www.youtube.com/user/dgelbart/videos)
-
It's about time ;D
https://www.youtube.com/watch?v=IJhgZBn-LHg (https://www.youtube.com/watch?v=IJhgZBn-LHg)
- Complicated, but OK, got it! :)
- So, what time is it?
https://www.youtube.com/watch?v=-5wpm-gesOY (https://www.youtube.com/watch?v=-5wpm-gesOY)
:palm:
-
Hangover
https://www.youtube.com/watch?v=re3oEKX6Fks (https://www.youtube.com/watch?v=re3oEKX6Fks)
:phew:
-
"Do one thing and do it well". Always loved that.
https://www.youtube.com/watch?v=N2M-p-OGvPg (https://www.youtube.com/watch?v=N2M-p-OGvPg)
A clever design from Leo's Bag of Tricks, a very promising YouTube channel! :-+
-
https://www.youtube.com/watch?v=WmLh6UvLo14 (https://www.youtube.com/watch?v=WmLh6UvLo14)
;D
-
What's with all this recent fuss about measured CMB (Cosmic Microwave Background)?
https://www.youtube.com/watch?v=Y5rZ58Q_0zk (https://www.youtube.com/watch?v=Y5rZ58Q_0zk)
;)
-
Filming the Speed of Light at 10 Trillion FPS
https://www.youtube.com/watch?v=7Ys_yKGNFRQ (https://www.youtube.com/watch?v=7Ys_yKGNFRQ)
-
World's Deepest-Penetration and Fastest Optical Cameras
https://www.youtube.com/watch?v=mzL6zPivtIQ (https://www.youtube.com/watch?v=mzL6zPivtIQ)
-
Which door?
https://www.youtube.com/watch?v=RnNdyCbwzn0 (https://www.youtube.com/watch?v=RnNdyCbwzn0)
"Can you pass the salt, please?"
https://www.youtube.com/watch?v=nORRgU8sGdE (https://www.youtube.com/watch?v=nORRgU8sGdE)
-
World's Deepest-Penetration and Fastest Optical Cameras
https://www.youtube.com/watch?v=mzL6zPivtIQ (https://www.youtube.com/watch?v=mzL6zPivtIQ)
I didn't know about all the new applications.
It was intriguing that I couldn't find any good brief info about how it works. Yes, the video mentions something about how it works, but doesn't teaches. I've seen a few years ago similar videos with femptosecond cameras, and always wrongly assumed that the principle is similar with that of a sampling oscilloscope, but that is NOT how it works.
The genius of it is that the whole video (like the one with the light passing through a bottle, or the illuminated figurines) is computed out of only one single flash. The video is not produced by taking repeated snapshots at each flash. It is one single flash and one photo, and from there, the time evolution of the light is reconstructed (computed). The movie is calculated, not filmed. At least this is how I understood it so far.
Following the research papers, the working principles of femptosecond cameras originate in some apparently unrelated concepts that were started during WWII, then developed in the following years to improve (chirped) radar and sonar technologies. At first it was about impulse stretching while keeping their shape (in analog domain).
Impulse stretching happens by passing the signal through a diffuser, then mixing the signal with a frequency chirp. By the chirp type, ascending or descending in frequency, the original pulse can be stretched or compressed in time while still keeping its shape. From there, it all went to building time lenses, or the opposite, to strongly sharpen wider pulses without destroying the vacuum tubes or the sonars, and so on. Stretched signals were required to extract more details from the echoes, while compressed signals were required to sharpen the pulses sent to make echoes. The sharper the sent pulses, the more precise the echoes.
Stretching is the first key concept, and from there there are many physics, RF, EE, optics and DSP tricks combined in making femptosecond cameras. I just hope I didn't get it all wrong, still digging. :)
So far it was a fascinating journey down the rabbit hole, thanks for bringing up this subject! :-+
-
Hi RoGeorge, I'm glad you liked the video. I was watching a series of videos on mathematics, and slowly the video recommendations on YouTube steered me towards these high-speed camera research. I'm sure there's more interesting videos on other research areas.
-
https://www.youtube.com/watch?v=dxPKuxrrG7A (https://www.youtube.com/watch?v=dxPKuxrrG7A)
-
How radioactive are bananas and other radioactive foods?
https://www.youtube.com/watch?v=OLdDKb9Bago (https://www.youtube.com/watch?v=OLdDKb9Bago)
:scared:
-
https://www.youtube.com/watch?v=bG3rvkpDsdg (https://www.youtube.com/watch?v=bG3rvkpDsdg)
:phew:
-
Steve Collin's Passive Dynamic Robot
https://www.youtube.com/watch?v=AdK7opXqoro (https://www.youtube.com/watch?v=AdK7opXqoro)
No motors, no microcontrollers, just mechanics and gravity :o
-
Intuitive explanations for Seebeck and Peltier effects :-+
https://www.youtube.com/watch?v=O6waiEeXDGo (https://www.youtube.com/watch?v=O6waiEeXDGo)
-
http://markoapparatus.com/portfolio/machine-clock/ (http://markoapparatus.com/portfolio/machine-clock/)
-
https://www.youtube.com/watch?v=hG3STsKx3fI (https://www.youtube.com/watch?v=hG3STsKx3fI)
Very long (3 hours and 5 minutes), but it doesn't make much sense unless watched entirely in one go. :)
-
https://www.youtube.com/watch?v=l36UkYtq6m0 (https://www.youtube.com/watch?v=l36UkYtq6m0)
Very short (15 seconds), but it doesn't make much sense unless watched entirely in one go. :)
LATER EDIT:
In case you were looking for a high resolution version of the annotated thumbnail of the video, like the one seen before pressing play, use this link format:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/maxresdefault.jpg
to get this jpg:
(https://img.youtube.com/vi/l36UkYtq6m0/maxresdefault.jpg)
-
https://www.youtube.com/watch?v=amCsM265Lw0 (https://www.youtube.com/watch?v=amCsM265Lw0)
The guinea pig one is wrong. ::)
-
The guinea pig one is wrong. ::)
How so?
It's just a visual version of the old joke:
A mathematician and physicist are standing on one side of a room. On the other side, a prize sits on a pedestal. The host says: "Each time I ring this bell, you may move half the distance to the prize. The first one to get it wins!"
Mathematician: "This is dumb, I'll never get there."
Physicist: "I'll get close enough..."
Or more homologically: an infinite series of patrons walk into a bar. The first orders a beer, the second half a beer, and so on. The bartender rolls his eyes and pours two beers.
Tim
-
The number of the threads of fur is finite, and also quantified, therefore the halving process cannot go forever.
The infinite halving is possible for numbers from R, but it's not possible for finite numbers from N, for example.
-
Ah yes, an example of this --
https://math.stackexchange.com/questions/250/a-challenge-by-r-p-feynman-give-counter-intuitive-theorems-that-can-be-transl
I can assert my continued correctness by suggesting the figure is a virtual guinea pig, for which the fur might indeed be infinite, or even continuous. It's solid shaded, after all. :P
And also on the subject of approximation, no haircut or shave is perfect, and leaving a few hairs would be a perfectly acceptable outcome (only needing some 14 or so trips to reach). If it went on for a long time, we might note that real hair also grows, so our job might never be complete; this would be best illustrated with a different animal, the yak, the process of shaving for which is, by one definition, never complete. ;D
Tim
-
https://math.stackexchange.com/questions/250/a-challenge-by-r-p-feynman-give-counter-intuitive-theorems-that-can-be-transl
Nice collection! :D
My most recent favorite is not listed there: Can you generate fair heads/tails tossing a slightly biased coin? (von Neumann extractor)
-
https://www.youtube.com/watch?v=ld-bG1CjkZY (https://www.youtube.com/watch?v=ld-bG1CjkZY)
:o
-
https://www.youtube.com/watch?v=x-GBkd1QafM (https://www.youtube.com/watch?v=x-GBkd1QafM)
;D
-
https://www.youtube.com/watch?v=m0cg3zCVKhM&t=745 (https://www.youtube.com/watch?v=m0cg3zCVKhM&t=745)
Smol osc demo at 12:25 ;D
-
Making sharp knives out of some very strange materials, e.g. eggs, Bismuth, mushrooms, chocolate, tofu ...
https://www.youtube.com/channel/UCg3qsVzHeUt5_cPpcRtoaJQ/videos (https://www.youtube.com/channel/UCg3qsVzHeUt5_cPpcRtoaJQ/videos)
-
Might be the next big thing 8)
https://www.youtube.com/watch?v=-t1_ffaFXao (https://www.youtube.com/watch?v=-t1_ffaFXao)
-
:o
https://www.youtube.com/watch?v=BhjqA8Lmj58 (https://www.youtube.com/watch?v=BhjqA8Lmj58)
The only thing I understood how it works was the ratchet wheel. ;D
-
https://www.youtube.com/watch?v=48sCx-wBs34 (https://www.youtube.com/watch?v=48sCx-wBs34)
:o
-
[attach=1]
-
This dude again...
https://www.youtube.com/watch?v=gMAKamGIiMc (https://www.youtube.com/watch?v=gMAKamGIiMc)
:)
-
No brain required. ;D
https://www.youtube.com/watch?v=9rxf_2EgwfE (https://www.youtube.com/watch?v=9rxf_2EgwfE)
-
Documentary "A video history of Japan's electronic industry":
Birth of The Transistor (Part 1)
https://www.youtube.com/watch?v=ihkRwArnc1k (https://www.youtube.com/watch?v=ihkRwArnc1k)
:o
Circuits in stone (Part 2) (https://youtu.be/uGRNXmWng3M)
The Calculator Wars (Part 3) (https://youtu.be/ansXGewduN4)
The technologial giant of the micron world (Part 4) (https://youtu.be/G40YwOg0_B8)
-
https://www.youtube.com/watch?v=iKcWu0tsiZM (https://www.youtube.com/watch?v=iKcWu0tsiZM)
;D
-
ScienceClic (French) (https://www.youtube.com/c/ScienceClic/videos)
ScienceClic English (https://www.youtube.com/c/ScienceClicEN/videos)
Gold! :-+
https://www.youtube.com/watch?v=wrwgIjBUYVc (https://www.youtube.com/watch?v=wrwgIjBUYVc)
:o
-
So many satellites floating around! Zoom in a little.
https://platform.leolabs.space/visualization
:scared:
-
https://www.youtube.com/watch?v=iwj78pR46zM (https://www.youtube.com/watch?v=iwj78pR46zM)
:o
-
Screw history ;D
https://www.youtube.com/watch?v=yzMU8rH4PN8 (https://www.youtube.com/watch?v=yzMU8rH4PN8)
-
https://www.youtube.com/watch?v=bqz65_YfcJg (https://www.youtube.com/watch?v=bqz65_YfcJg)
;D
-
https://www.youtube.com/watch?v=bqz65_YfcJg (https://www.youtube.com/watch?v=bqz65_YfcJg)
;D
My question is why?
And that needle drop is waaay too slow.
:)
-
https://www.youtube.com/watch?v=jBPFCvEhv9Y (https://www.youtube.com/watch?v=jBPFCvEhv9Y)
Haltere? ???
-
[attachimg=1]
-
https://hackaday.com/2020/12/01/extracting-a-gate-from-amd-and-intel/ (https://hackaday.com/2020/12/01/extracting-a-gate-from-amd-and-intel/)
https://www.youtube.com/watch?v=1kQUXpZpLXI (https://www.youtube.com/watch?v=1kQUXpZpLXI)
7nm \$\approx\$ 14nm? :o
Part 1 and 2
https://youtu.be/uEMDkbF3hu0 (https://youtu.be/uEMDkbF3hu0)
https://youtu.be/pYF7Qym9Pq0 (https://youtu.be/pYF7Qym9Pq0)
-
There are 4 more with even better explanations:
Inside i7-8700K - Scanning Electron Microscope (SEM) Footage (en)
https://www.youtube.com/watch?v=O_iu48VTRDE (https://www.youtube.com/watch?v=O_iu48VTRDE)
From the same channel:
Catching a single Transistor - We're looking inside the i9-9900K: Prep and expensive equipment 1/3, 2/3, 3/3
https://youtu.be/WOZqoTuAGKY (https://youtu.be/WOZqoTuAGKY)
https://youtu.be/VBCtsqs8278 (https://youtu.be/VBCtsqs8278)
https://www.youtube.com/watch?v=TtuUANbaEFI (https://www.youtube.com/watch?v=TtuUANbaEFI)
:o
-
https://www.youtube.com/watch?v=C3emGQ2-1uE (https://www.youtube.com/watch?v=C3emGQ2-1uE)
^-^
-
Time reversed optical waves :o
https://www.youtube.com/watch?v=1WcIejZd__w (https://www.youtube.com/watch?v=1WcIejZd__w)
https://phys.org/news/2020-12-physicists-time-reversed-optical.html (https://phys.org/news/2020-12-physicists-time-reversed-optical.html)
-
https://www.youtube.com/watch?v=iqBh7G4uDR8 (https://www.youtube.com/watch?v=iqBh7G4uDR8)
::) Diana Walsh Pasulka: Aliens, Technology, Religion & the Nature of Belief | Lex Fridman Podcast #149
-
https://www.youtube.com/watch?v=fn3KWM1kuAw (https://www.youtube.com/watch?v=fn3KWM1kuAw)
;D
-
Well, we all know what dancing leads to..
:popcorn:
-
Very nice channel: brusspup
https://www.youtube.com/user/brusspup/videos (https://www.youtube.com/user/brusspup/videos)
Example: the Schlieren Effect:
https://www.youtube.com/watch?v=NmS6h_fkPgk (https://www.youtube.com/watch?v=NmS6h_fkPgk)
Happy New Year 2021 to all of you
-
The mind, the conscientiousness and anything else is nothing but a driven illusion. :o
https://www.youtube.com/watch?v=dBap_Lp-0oc (https://www.youtube.com/watch?v=dBap_Lp-0oc)
So, just be nice and enjoy existing. ^-^
-
Lissajous (source, https://www.otw20.com/viewtopic.php?p=2101#p2101 (https://www.otw20.com/viewtopic.php?p=2101#p2101))
(http://img1.reactor.cc/pics/post/%D0%B3%D0%B8%D1%84%D0%BA%D0%B8-%D0%B7%D0%B0%D0%BB%D0%B8%D0%BF%D0%B0%D0%BB%D0%BE%D0%B2%D0%BE-%D0%A4%D0%B8%D0%B3%D1%83%D1%80%D1%8B-%D0%9B%D0%B8%D1%81%D1%81%D0%B0%D0%B6%D1%83-6025647.gif)
:scared:
-
On the top row, odd harmonics: f, 3f, 5f, 7f, ... , 19f
On the left column, even harmonics: f, 2f, 4f, 6f, ... , 18f
Are you sure about this? If this would be the case, then you should not have all those circles in the diagonal. Hmmm ...
-
Good catch! :-+
Mistake deleted, my bad, sorry.
In the attached animation, both the rows and the columns have all frequencies, from f to 10f.
-
https://www.youtube.com/watch?v=8XV2-pmiyAg (https://www.youtube.com/watch?v=8XV2-pmiyAg)
:)
-
It seems as though the moon is tidally locked or something.
-
A look back at EV racing over 3 years ago in Canada:
https://www.youtube.com/watch?v=Hq_PehccY20 (https://www.youtube.com/watch?v=Hq_PehccY20)
At 1:04, how many names do you recognize on the sign?
At 1:41, I think everyone here should recognize what car it is and why it's special.
-
The Space Shuttle and the Horse's Rear End
http://www.astrodigital.org/space/stshorse.html (http://www.astrodigital.org/space/stshorse.html)
;D
-
Red Hot Nickel Ball in Water
https://www.youtube.com/watch?v=9qSEfcIfYbw (https://www.youtube.com/watch?v=9qSEfcIfYbw)
https://www.youtube.com/watch?v=QzdP_4j7xTI (https://www.youtube.com/watch?v=QzdP_4j7xTI)
:o
-
A look back at EV racing over 3 years ago in Canada:
https://www.youtube.com/watch?v=Hq_PehccY20 (https://www.youtube.com/watch?v=Hq_PehccY20)
At 1:04, how many names do you recognize on the sign?
At 1:41, I think everyone here should recognize what car it is and why it's special.
Is it just me or does she appear to have left the factory missing a crucial piece of software?
-
reminds me of lava underwater!
For example, the later part of this video.
https://www.youtube.com/watch?v=21bZx0vBI9s (https://www.youtube.com/watch?v=21bZx0vBI9s)
-
AI playing hide and seek. ;D
https://www.youtube.com/watch?v=Lu56xVlZ40M (https://www.youtube.com/watch?v=Lu56xVlZ40M)
-
This happens when you hire an engineer to dispose of a dead whale.
https://www.youtube.com/watch?v=V6CLumsir34 (https://www.youtube.com/watch?v=V6CLumsir34)
-
If Rockets were Transparent 8)
https://www.youtube.com/watch?v=su9EVeHqizY (https://www.youtube.com/watch?v=su9EVeHqizY)
-
https://www.youtube.com/watch?v=orS3gp8QKl0 (https://www.youtube.com/watch?v=orS3gp8QKl0)
:scared:
-
Automatic pool stick
https://www.youtube.com/watch?v=vsTTXYxydOE (https://www.youtube.com/watch?v=vsTTXYxydOE)
-
Mars in 4K 8)
https://www.youtube.com/watch?v=ZEyAs3NWH4A (https://www.youtube.com/watch?v=ZEyAs3NWH4A)
-
https://www.youtube.com/watch?v=4czjS9h4Fpg (https://www.youtube.com/watch?v=4czjS9h4Fpg)
No green people, disappointed! >:(
-
In 1970, Lou Reed, wrote "Satellite of Love", released in 1972. In the song he predicts:
Satellite's gone way up to Mars
Soon it'll be filled with parkin' cars
That begs the question: how many cars (rovers, vehicles, whatever) do we already have parked on Mars?
-
That begs the question: how many cars (rovers, vehicles, whatever) do we already have parked on Mars?
Duuude! ;D
Maybe send some powering algae then:
https://www.youtube.com/watch?v=oYZxBV18tS4 (https://www.youtube.com/watch?v=oYZxBV18tS4)
:)
-
When you spend too much time making test benches with corner cases
(https://i.redd.it/xy4my3f5buj61.png)
-
https://www.youtube.com/watch?v=9S3FRENg43I (https://www.youtube.com/watch?v=9S3FRENg43I)
:scared:
-
https://www.youtube.com/watch?v=2EBmhYqW0Xk (https://www.youtube.com/watch?v=2EBmhYqW0Xk)
:o
-
A look back at EV racing over 3 years ago in Canada:
https://www.youtube.com/watch?v=Hq_PehccY20 (https://www.youtube.com/watch?v=Hq_PehccY20)
At 1:04, how many names do you recognize on the sign?
At 1:41, I think everyone here should recognize what car it is and why it's special.
Is it just me or does she appear to have left the factory missing a crucial piece of software?
they got side tracked installing bigger bumpers ;)
-
Look around 360°. 8)
With scroll and zoom. :-+
On Mars! :o
https://apod.nasa.gov/apod/ap210309.html
-
Bending spacetime - with woodturning!
https://www.youtube.com/watch?v=ML2nsBag3kk (https://www.youtube.com/watch?v=ML2nsBag3kk)
-
Bending spacetime - with woodturning!
https://www.youtube.com/watch?v=ML2nsBag3kk (https://www.youtube.com/watch?v=ML2nsBag3kk)
Wow, cool! I didn't realize before that stretching a plane of 2D squares in a 3rd dimension would be the same as cutting a hole in an array of non-stretched volume of cubes. :o
-
This guy, Olivier Gomis, is really amazing! I can recommend the other videos of his channel as well.
And I do really like his sense of humour. :-DD
-
https://www.youtube.com/watch?v=Orw7xd2EqyM (https://www.youtube.com/watch?v=Orw7xd2EqyM)
:o
-
https://www.youtube.com/watch?v=Je6nVap7ka0 (https://www.youtube.com/watch?v=Je6nVap7ka0)
^-^
-
https://www.youtube.com/watch?v=vrzalLssomg (https://www.youtube.com/watch?v=vrzalLssomg)
:o
-
The Surface of Venus from Venera 13
Image Credit: Soviet Planetary Exploration Program, Venera 13;
Processing & Copyright: Donald Mitchell & Michael Carroll (used with permission)
Explanation: If you could stand on Venus -- what would you see? Pictured is the view from Venera 13, a robotic Soviet lander which parachuted and air-braked down through the thick Venusian atmosphere in March of 1982. The desolate landscape it saw included flat rocks, vast empty terrain, and a featureless sky above Phoebe Regio near Venus' equator. On the lower left is the spacecraft's penetrometer used to make scientific measurements, while the light piece on the right is part of an ejected lens-cap. Enduring temperatures near 450 degrees Celsius and pressures 75 times that on Earth, the hardened Venera spacecraft lasted only about two hours. Although data from Venera 13 was beamed across the inner Solar System almost 40 years ago, digital processing and merging of Venera's unusual images continues even today. Recent analyses of infrared measurements taken by ESA's orbiting Venus Express spacecraft indicate that active volcanoes may currently exist on Venus.
Source:
https://apod.nasa.gov/apod/ap210317.html
(https://apod.nasa.gov/apod/image/2103/Venus_Venera13_1705.jpg)
:o
-
How Amateur Radio Fans Decoded SpaceX's Telemetry & Engineering Video
https://www.youtube.com/watch?v=74_N163HyhA (https://www.youtube.com/watch?v=74_N163HyhA)
"Is ham radio dead?" ;D
-
The new uk £50 note looks like it will entertain us for a few hours
https://www.gchq.gov.uk/information/turing-challenge (https://www.gchq.gov.uk/information/turing-challenge)
-
A bit of multivariate calculus to start your day :)
https://www.youtube.com/watch?v=wCZ1VEmVjVo (https://www.youtube.com/watch?v=wCZ1VEmVjVo)
-
https://www.youtube.com/watch?v=B1R3dTdcpSU&t=86s (https://www.youtube.com/watch?v=B1R3dTdcpSU&t=86s)
https://apod.nasa.gov/apod/ap210401.html (https://apod.nasa.gov/apod/ap210401.html) 8)
-
Logarithms explained in Bob-Ross-style. :-+ :-DD
https://www.youtube.com/watch?v=up21mvokyQ4 (https://www.youtube.com/watch?v=up21mvokyQ4)
-
https://www.youtube.com/watch?v=qevIIQHrJZg (https://www.youtube.com/watch?v=qevIIQHrJZg)
Inflatable helical antenna. Checked. 8)
-
What's all this Muon g-2 experiment, anyhow? ???
https://www.youtube.com/watch?v=UnTn0nJe5Ws (https://www.youtube.com/watch?v=UnTn0nJe5Ws)
-
"The Wavelet Tutorial" by Robi Polikar :-+
(http://users.rowan.edu/~polikar/res/home/wavelet.gif)
Best introductory material so far, for building an intuition regarding Fourier Transform and Wavelet Transform.
http://cseweb.ucsd.edu/~baden/Doc/wavelets/polikar_wavelets.pdf (http://cseweb.ucsd.edu/~baden/Doc/wavelets/polikar_wavelets.pdf) 1st Edition
https://web.iitd.ac.in/~sumeet/WaveletTutorial.pdf (https://web.iitd.ac.in/~sumeet/WaveletTutorial.pdf) 2nd Edition
http://users.rowan.edu/~polikar/WTtutorial.html (http://users.rowan.edu/~polikar/WTtutorial.html) Webpage (the current website doesn't render the formulas, PDF versions recommended)
-
For all the intergalactic travelers, this is Earth, the night club planet w dancing lights. 8)
https://www.youtube.com/watch?v=zIqG42AD4Gw (https://www.youtube.com/watch?v=zIqG42AD4Gw)
-
How to build a water computer?
Steve Mould has an answer:
https://www.youtube.com/watch?v=IxXaizglscw (https://www.youtube.com/watch?v=IxXaizglscw)
-
https://www.youtube.com/watch?v=t7kr7utvVEs (https://www.youtube.com/watch?v=t7kr7utvVEs)
;D
-
https://www.youtube.com/watch?v=69Nlu9W1X2s (https://www.youtube.com/watch?v=69Nlu9W1X2s)
:o
-
Source: https://apod.nasa.gov/apod/ap210504.html (https://apod.nasa.gov/apod/ap210504.html)
(https://apod.nasa.gov/apod/image/2105/IssSun_Ergun_1752.jpg)
Tune to The Diamond City Radio while looking at this^: I Don't Want to Set the World on Fire - The Ink Spots (https://youtu.be/YAi7BW8rIpY?t=2493) 8)
-
Wood is piezoelectric
https://twitter.com/szeloof/status/1390037093926244353
-
https://phys.org/news/2021-05-perseverance-mars-rover-captures-video.html (https://phys.org/news/2021-05-perseverance-mars-rover-captures-video.html)
https://www.youtube.com/watch?v=y5niGi4k9vQ (https://www.youtube.com/watch?v=y5niGi4k9vQ)
:clap:
-
https://www.youtube.com/watch?v=N0SgC78YFPc (https://www.youtube.com/watch?v=N0SgC78YFPc)
:o
-
Physics is overrated. :rant:
https://www.youtube.com/watch?v=jyQwgBAaBag (https://www.youtube.com/watch?v=jyQwgBAaBag)
Vrooom! ;D
-
https://www.youtube.com/watch?v=jV39CKFm0zo (https://www.youtube.com/watch?v=jV39CKFm0zo)
Vrooom! :)
-
https://www.youtube.com/watch?v=Y1MDOerruDU (https://www.youtube.com/watch?v=Y1MDOerruDU)
Choo Choo Vrooom! ::)
-
What ever you do, don't show Elon that!
-
https://www.youtube.com/watch?v=2Kv6KwADn7Q (https://www.youtube.com/watch?v=2Kv6KwADn7Q)
???
-
"The fact that something has temperature is a reflection of the idea that it interacts with stuff around it," Sudhir says. "And it's harder to isolate larger objects from all the things happening around them."
Source: https://phys.org/news/2021-06-physicists-human-scale-standstill-quantum-state.html
:o
-
Individual electrons visualized with a ruler.
https://www.nature.com/articles/s41598-021-89714-2.pdf (https://www.nature.com/articles/s41598-021-89714-2.pdf)
https://phys.org/news/2021-06-absorption-individual-electrons-captured-video.html (https://phys.org/news/2021-06-absorption-individual-electrons-captured-video.html)
https://www.youtube.com/watch?v=aiXH9TiY0_Q (https://www.youtube.com/watch?v=aiXH9TiY0_Q)
???
-
Physicists show that flying beer coasters will flip 0.45 seconds into flight
"University of Bonn physicists were inspired to investigate the aerodynamics of flying beer mats after traveling to Munich with a German physics demonstration show."
https://arstechnica.com/science/2021/06/the-physics-of-why-that-flying-beer-coaster-is-nothing-like-a-frisbee/ (https://arstechnica.com/science/2021/06/the-physics-of-why-that-flying-beer-coaster-is-nothing-like-a-frisbee/)
-
https://www.youtube.com/watch?v=AHUv9Zda_48 (https://www.youtube.com/watch?v=AHUv9Zda_48)
:o
-
m-Widar, like a RADAR, but uses many Tx points, sparsity, random patterns, correlation and a post processing technique called transient rendering (https://adamsmith.as/papers/ucsc-soe-08-26.pdf). Can see you behind walls or indoors at 300+ kiloFPS! :o
The transmitting antennas operated at frequencies from 200 megahertz to 10 gigahertz [...]. The receiver consisted of two antennas connected to a signal digitizer. The digitized data were transferred to a laptop computer and uploaded to the graphics processing unit to reconstruct the images.
The NIST team used the method to reconstruct a scene with 1.5 billion samples per second, a corresponding image frame rate of 366 kilohertz (frames per second). [...]
With 12 antennas, the NIST system generated 4096-pixel images, with a resolution of about 10 centimeters across a 10-meter scene.
Source: https://phys.org/news/2021-06-method-radio-image-hidden.html
-
Reactive Ion Etching (RIE) for better homemade computer chips 8)
https://www.youtube.com/watch?v=RoQgnC0Oz2k (https://www.youtube.com/watch?v=RoQgnC0Oz2k)
Source: https://hackaday.com/2021/06/29/garage-semiconductor-fab-gets-reactive-ion-etching-upgrade/ (https://hackaday.com/2021/06/29/garage-semiconductor-fab-gets-reactive-ion-etching-upgrade/)
-
Damn fine (up and coming?) science channel:
https://www.youtube.com/c/AlphaPhoenixChannel/videos (https://www.youtube.com/c/AlphaPhoenixChannel/videos)
YT being what it is, I'm shocked I haven't seen this sooner; alas!
Tim
-
https://www.youtube.com/watch?v=m_ScOUNAdlM (https://www.youtube.com/watch?v=m_ScOUNAdlM)
Gold! :-+
-
I can't see a problem here.
The topic is saying "Fun for nerds".
So, if someone here is finding this interesting (and having therefore a bit fun), then I'd call it on-topic. :-+ :D
-
I can't see a problem here.
The topic is saying "Fun for nerds".
So, if someone here is finding this interesting (and having therefore a bit fun), then I'd call it on-topic. :-+ :D
That's true, but also it would be a slippery slope.
Meanwhile I changed my mind, and deleted my previous offtopic post.
-
The Story of Shor's Algorithm, Straight From the Source | Peter Shor :popcorn:
https://www.youtube.com/watch?v=6qD9XElTpCE (https://www.youtube.com/watch?v=6qD9XElTpCE)
-
Heat conduction in crystals
xofunkox-scientific experiments
https://www.youtube.com/watch?v=IzrqSp3pTHI (https://www.youtube.com/watch?v=IzrqSp3pTHI)
Fourier would have loved that ;D
-
Operational Amplifier with Switchable Gain
All Electronics Channel
https://www.youtube.com/watch?v=U85Y7ZQBsqc (https://www.youtube.com/watch?v=U85Y7ZQBsqc)
:-+
-
I Invented a New Material: Hydrophobic Slime
The Action Lab
https://www.youtube.com/watch?v=AKkZJWHHSoY (https://www.youtube.com/watch?v=AKkZJWHHSoY)
???
-
(https://forum.atheistrepublic.com/uploads/default/original/2X/0/064c615e1131eca079f8ad4aa060467933d9fd55.jpeg)
-
:-DD
Well, then let's hope, that his wife isn't Sabine Hossenfelder or similar. >:D :box:
Her YouTube channel:
https://www.youtube.com/c/sabinehossenfelder (https://www.youtube.com/c/sabinehossenfelder)
-
(https://forum.atheistrepublic.com/uploads/default/original/2X/0/064c615e1131eca079f8ad4aa060467933d9fd55.jpeg)
IDK, is the PIN = 3112, because the denominator seems to be just bait. :-//
(https://www.eevblog.com/forum/chat/fun-for-nerds/?action=dlattach;attach=1242212;image)
-
Trapping Particles In a Beam of Light—The Optical Tweezers Experiment
The Action Lab
https://www.youtube.com/watch?v=y-Tp5oswnNA (https://www.youtube.com/watch?v=y-Tp5oswnNA)
8)
-
The Surprising Genius of 3D Printed Rockets
Veritasium
https://www.youtube.com/watch?v=kz165f1g8-E (https://www.youtube.com/watch?v=kz165f1g8-E)
:o
-
Upgraded Homemade Silicon IC Fab Process
Sam Zeloof (https://www.youtube.com/c/SamZeloof/videos)
https://www.youtube.com/watch?v=IS5ycm7VfXg (https://www.youtube.com/watch?v=IS5ycm7VfXg)
8)
-
Intel 486: 30 years old and still fascinating
From a new channel: Micrographia :-+
https://www.youtube.com/watch?v=OtA_9eYnj8U (https://www.youtube.com/watch?v=OtA_9eYnj8U)
-
Joscha Bach: Nature of Reality, Dreams, and Consciousness | Lex Fridman Podcast #212
:popcorn:
https://www.youtube.com/watch?v=rIpUf-Vy2JA (https://www.youtube.com/watch?v=rIpUf-Vy2JA)
Same invitee, same podcast, part one from a year ago:
Joscha Bach: Artificial Consciousness and the Nature of Reality | Lex Fridman Podcast #101 (https://youtu.be/P-2P3MSZrBM)
-
HOLY crap! That video by Sam Zeloof is totally incredible! He sure has some serious test gear there, too!
Jon
-
AT&T Archives: Similiarities of Wave Behavior (Bonus Edition)
AT&T Tech Channel
https://www.youtube.com/watch?v=DovunOxlY1k (https://www.youtube.com/watch?v=DovunOxlY1k)
-
Journey into a realistic Black Hole [VR 4K 360°],
an interactive :o video from ScienceClic English.
https://www.youtube.com/watch?v=17tEg_uTF_A (https://www.youtube.com/watch?v=17tEg_uTF_A)
8)
-
HOW CAR DIFFERENTIAL WORKS
DISCOVER automoto
https://www.youtube.com/watch?v=yQRifTi6Eis (https://www.youtube.com/watch?v=yQRifTi6Eis)
More of the same footage on the 'US Auto Industry' channel :
Around The Corner - How Differential Steering Works (1937) (https://youtu.be/yYAw79386WI)
Spinning Levers - How A Transmission Works (1936) (https://youtu.be/JOLtS4VUcvQ)
The wheel is an infinite spinning lever. ^-^
-
Livewired: The Inside Story of the Ever-Changing Brain - with David Eagleman
The Royal Institution
https://www.youtube.com/watch?v=3rfbLZi4Eak (https://www.youtube.com/watch?v=3rfbLZi4Eak)
Brainzzz! ::)
-
Underwater laser cutting and silver sintering to make ceramic circuit boards
Applied Science
https://www.youtube.com/watch?v=kxXEI0Ce6C0 (https://www.youtube.com/watch?v=kxXEI0Ce6C0)
sudo make ceramicPCB 8)
-
Your DNA is already in a database
Veritasium
https://www.youtube.com/watch?v=KT18KJouHWg (https://www.youtube.com/watch?v=KT18KJouHWg)
???
-
The HIDDEN Screws of PRECISION
Machine Thinking
https://www.youtube.com/watch?v=isVQMHmzHNo (https://www.youtube.com/watch?v=isVQMHmzHNo)
^-^
-
Introducing The Rose Engine (Happy Anniversary, Mrs Clickspring.)
Clickspring
https://www.youtube.com/watch?v=Gw3aCAQjC88 (https://www.youtube.com/watch?v=Gw3aCAQjC88)
^-^
-
Is It Possible To Bend Light With Your Finger? The Light Bender Experiment
The Action Lab
https://www.youtube.com/watch?v=Eouvsy8JdLU (https://www.youtube.com/watch?v=Eouvsy8JdLU)
No need for 8) if you have :-+
;D
-
How To Separate Alcohol And Water
The Action Lab
https://www.youtube.com/watch?v=I5wuMGNsdHk (https://www.youtube.com/watch?v=I5wuMGNsdHk)
You can remove the water from your Isopropyl alcohol?! ???
-
Harmonic Distortion and Nonlinearity (live demo of waveform symmetry vs harmonics order content)
All Electronics Channel
https://www.youtube.com/watch?v=acWZLW5EE3U (https://www.youtube.com/watch?v=acWZLW5EE3U)
Seeing is believing :-+
-
Magnetic Locking WITHOUT a Superconductor!
The Action Lab
https://www.youtube.com/watch?v=V5FyFvgxUhE (https://www.youtube.com/watch?v=V5FyFvgxUhE)
:o
-
Brian Greene: Quantum Gravity, The Big Bang, Aliens, Death, and Meaning | Lex Fridman Podcast #232
Lex Fridman
https://www.youtube.com/watch?v=98HZanvAJ8Y (https://www.youtube.com/watch?v=98HZanvAJ8Y)
^-^
-
This Robot Walks, Flies, Skateboards, Slacklines
Veritasium
https://www.youtube.com/watch?v=H1_OpWiyijU (https://www.youtube.com/watch?v=H1_OpWiyijU)
???
-
Can you change a sum by rearranging its numbers? --- The Riemann Series Theorem
Morphocular
https://www.youtube.com/watch?v=U0w0f0PDdPA (https://www.youtube.com/watch?v=U0w0f0PDdPA)
:o Can somebody please ban infinity from math!? :rant:
So we won't have to deal with such outrageous outcomes?!
P.S. 3blue1brown together with Leios Labs organized a competition of "visual math" videos, if we can use such a name, and they made a playlist of about 200+ video entries (https://www.youtube.com/playlist?list=PLnQX-jgAF5pTkwtUuVpqS5tuWmJ-6ZM-Z). Most of them are outstanding. This one was from that playlist.
-
https://www.youtube.com/watch?v=xF6x1ftN-H4 (https://www.youtube.com/watch?v=xF6x1ftN-H4)
-
Raspberry Pi Zero 2 W Extreme Teardown
electronupdate
https://www.youtube.com/watch?v=6477JFdpqew (https://www.youtube.com/watch?v=6477JFdpqew)
:-+
-
Making Cold Light (Cryogenically Induced Phosphorescence)
The Action Lab
https://www.youtube.com/watch?v=3nBk5lNw8Bo (https://www.youtube.com/watch?v=3nBk5lNw8Bo)
:o
-
The Big Misconception About Electricity
Veritasium
https://www.youtube.com/watch?v=bHIhgxav9LY (https://www.youtube.com/watch?v=bHIhgxav9LY)
:rant:
-
Copepods: The Diatom-Devouring King of Plankton
Journey to the Microcosmos
https://www.youtube.com/watch?v=UZZ_RmpzSFQ (https://www.youtube.com/watch?v=UZZ_RmpzSFQ)
^-^
-
(https://www.eevblog.com/forum/chat/fun-for-nerds/?action=dlattach;attach=1333424;image)
All rights belongs to the owner(s), not my pic. (https://www.thefreedictionary.com/words-that-end-in-tor)
;D
-
What Does An Electron Look Like When You Rotate It?
The Action Lab
https://www.youtube.com/watch?v=pKKy2mmsziI (https://www.youtube.com/watch?v=pKKy2mmsziI)
:scared:
-
What did Yoda say when he saw himself in 4k?
HDMI
-
I've got a bad feeling about this.
-
(https://www.eevblog.com/forum/chat/fun-for-nerds/?action=dlattach;attach=1343051;image)
;D
-
How Does This App Blow Out Candles?
The Action Lab
https://www.youtube.com/watch?v=tX6XSs2T5Go (https://www.youtube.com/watch?v=tX6XSs2T5Go)
:o
-
Björk talking about her TV (subtitled)
igorbuenocorrea
https://www.youtube.com/watch?v=jX9y6AA5oOo (https://www.youtube.com/watch?v=jX9y6AA5oOo)
:-+
-
The Insane Engineering of James Webb Telescope
Real Engineering
https://www.youtube.com/watch?v=aICaAEXDJQQ (https://www.youtube.com/watch?v=aICaAEXDJQQ)
The launching is in 5 days, 24th of December 2021 :scared:
URGENT: Somebody please notify Santa about this!
-
First step to Schroedinger's cat: Entanglement between superconducting qubits and a tardigrade
https://www.iflscience.com/physics/tardigrade-might-be-first-animal-to-be-quantum-entangled-and-live/ (https://www.iflscience.com/physics/tardigrade-might-be-first-animal-to-be-quantum-entangled-and-live/)
https://arxiv.org/abs/2112.07978 (https://arxiv.org/abs/2112.07978)
-
Ultrasonic Standing Wave Visualisation
chrismurray72
https://www.youtube.com/watch?v=SU7nQNC7CQo (https://www.youtube.com/watch?v=SU7nQNC7CQo)
Cool visualization :D
-
https://www.youtube.com/watch?v=s4Ctjb1BFKE (https://www.youtube.com/watch?v=s4Ctjb1BFKE)
-
Russian phone dialler using interesting magnetic memory tech
mikeselectricstuff
https://www.youtube.com/watch?v=tPT6nIRFI_I (https://www.youtube.com/watch?v=tPT6nIRFI_I)
:)
-
The Real Reason a String Launcher Works
The Action Lab
https://www.youtube.com/watch?v=2ANnMsyunkk (https://www.youtube.com/watch?v=2ANnMsyunkk)
???
-
Well, yeah, this same dude again:
Building An Ion Trap To Levitate Particles
The Action Lab
https://www.youtube.com/watch?v=zW9YQaUS5RM (https://www.youtube.com/watch?v=zW9YQaUS5RM)
but then, to make sense out of that you'll most probably need to watch this one first:
The Odd Behavior of Spinning Saddle Shapes
https://www.youtube.com/watch?v=1NBOsELakx4 (https://www.youtube.com/watch?v=1NBOsELakx4)
-
Bottle-to-Bottle Honey Production | Contactless Beekeeping
Advoko MAKES
https://www.youtube.com/watch?v=9ItlOFLTUAs (https://www.youtube.com/watch?v=9ItlOFLTUAs)
That's sweet, I guess... :D
-
Australian Walking Stick Insects Are Three Times Weirder Than You Think | Deep Look
https://www.youtube.com/watch?v=P5Y-bCfKUrU (https://www.youtube.com/watch?v=P5Y-bCfKUrU)
Just like these ants, would we notice if extraterrestrials were to live between us, humans?
:-X
-
Mechanical Fourier Transform calculators:
The Most Powerful Computers You've Never Heard Of | Veritasium
https://www.youtube.com/watch?v=IgF3OX8nT0w (https://www.youtube.com/watch?v=IgF3OX8nT0w)
(1/4) Intro/History: Introducing a 100-year-old mechanical computer | engineerguy
https://www.youtube.com/watch?v=NAsM30MAHLg (https://www.youtube.com/watch?v=NAsM30MAHLg)
(2/4) Synthesis: A machine that uses gears, springs and levers to add sines and cosines (https://youtu.be/8KmVDxkia_w)
(3/4) Analysis: Explaining Fourier analysis with a machine (https://youtu.be/6dW6VYXp9HM)
(4/4) Operation: The details of setting up the Harmonic Analyzer (https://youtu.be/jfH-NbsmvD4)
:-DMM
-
Using TE to detect malware:
Virus detection system using a Raspberry Pi, an H-field probe and an oscilloscope
https://techxplore.com/news/2022-01-raspberry-pi-viruses-devices-software.html (https://techxplore.com/news/2022-01-raspberry-pi-viruses-devices-software.html)
-
Brian Keating: Cosmology, Astrophysics, Aliens & Losing the Nobel Prize | Lex Fridman Podcast #257
https://www.youtube.com/watch?v=nhGwJLXzHs8 (https://www.youtube.com/watch?v=nhGwJLXzHs8)
^-^
-
The importance of namespacing.
(https://www.eevblog.com/forum/chat/fun-for-nerds/?action=dlattach;attach=1390871;image)
Stolen from https://forums.freebsd.org/threads/its-all-about-jokes-funny-pics.286/page-36#post-552572 (https://forums.freebsd.org/threads/its-all-about-jokes-funny-pics.286/page-36#post-552572)
;D
-
Some ppl I know can still drink coffee really, really hot. Weirdos.
-
Wow!
-
Maybe they are from a different namespace. ;D
-
Very nice! I have always loved clear acrylic stuff.
Wish I had a local ewaste place like she does.
https://www.youtube.com/watch?v=s4Ctjb1BFKE (https://www.youtube.com/watch?v=s4Ctjb1BFKE)
This is a super cool way to make a boring workshop area shine.
Wonder if there was any way to make it ESD-safe, Maybe embedding thin wires in the desktop, or soldering a single ground wire to all the pieces of PCB inside and then making it available to connect to might do it? I would worry about ESD with acrylic countertop, Could put an ESD mat on it, I suppose.
Nice!
-
CG short film about seduction | "Hot dog" - by Burban, Cameron, Diaz, Raimondo and Valin
KIS KIS - keep it short
https://www.youtube.com/watch?v=kS1Rd9pQk8U (https://www.youtube.com/watch?v=kS1Rd9pQk8U)
:)
-
God testing a software | "Tales from the Multiverse" - by Tumblehead
https://www.youtube.com/watch?v=ToTgcBRC4FE (https://www.youtube.com/watch?v=ToTgcBRC4FE)
;D
-
IMS & RFIC 2021 keynote "Transceiver Roadmap for 2035 and Beyond" by Bram Nauta.
icdutwentenl
https://www.youtube.com/watch?v=W3y8ADudPBA (https://www.youtube.com/watch?v=W3y8ADudPBA)
8)
-
Wonder if there was any way to make it ESD-safe, Maybe embedding thin wires in the desktop, or soldering a single ground wire to all the pieces of PCB inside and then making it available to connect to might do it? I would worry about ESD with acrylic countertop, Could put an ESD mat on it, I suppose.
Perhaps mixing some fine carbon dust into the topmost epoxy layer would make it conductive enough without obscuring the transparency too much.
-
Who Has The Best Quantum Computer?
DoS - Domain of Science
https://www.youtube.com/watch?v=gcbMKt079l8 (https://www.youtube.com/watch?v=gcbMKt079l8)
???
-
You Use Quantum Physics to Smell
DoS - Domain of Science
https://www.youtube.com/watch?v=DJsJIVXkrGQ (https://www.youtube.com/watch?v=DJsJIVXkrGQ)
8)
-
A Simple Explanation of Quantum Wavefunctions
DoS - Domain of Science
https://www.youtube.com/watch?v=sOI4DlWQ_1w (https://www.youtube.com/watch?v=sOI4DlWQ_1w)
:-+
-
Black Hole Mergers and Multi-Messenger Astronomy - Sixty Symbols
Sixty Symbols
https://www.youtube.com/watch?v=aSUlCB0gNK8 (https://www.youtube.com/watch?v=aSUlCB0gNK8)
The interferometer to (astro)physicist is just like the SDR to (ham)EE. ;D
LIGO is so sensitive I bet it can even detect the Luminiferous Ether, and if I were to have my own LIGO, pretty obvious the Michelson-Morley would be the very first experiment I would do. ^-^
Why nobody is trying that any more? Disappointed. >:(
-
Ray Holt and the history of MP944/Cadc @ Rome Technopole, 2017
Leo Sorge
https://www.youtube.com/watch?v=3GROYRkWvxc (https://www.youtube.com/watch?v=3GROYRkWvxc)
Intel 4004 was not the first microprocessor. :o
The first microprocessor was Ray Holt's MP944, designed for the F-14 fighter jets and therefore kept secret.
https://firstmicroprocessor.com/documents/ (https://firstmicroprocessor.com/documents/)
\[\star \ \star \ \star\]
LATER EDIT:
https://computerhistory.org/blog/who-invented-the-microprocessor/ (https://computerhistory.org/blog/who-invented-the-microprocessor/)
-
https://www.youtube.com/watch?v=v68zYyaEmEA (https://www.youtube.com/watch?v=v68zYyaEmEA)
Relevant to current events [Wordle is very popular atm], but also CS, SE/CE and indeed EE and more. :)
Tim
-
Minus sex not good! ;D
$ python3
Python 3.8.12 (default, Jan 2 2022, 01:12:07)
[Clang 11.0.1 (git@github.com:llvm/llvm-project.git llvmorg-11.0.1-0-g43ff75f2c on
freebsd13
Type "help", "copyright", "credits" or "license" for more information.
>>> a = -5
>>> b = -5
>>> a is b
True
>>> a = -6
>>> b = -6
>>> a is b
False
-
https://www.reddit.com/r/chemistry/comments/spute4/the_ultimate_separation_science_technique/ (https://www.reddit.com/r/chemistry/comments/spute4/the_ultimate_separation_science_technique/)
-
Plasmas and Rainbows!
Jefferson Lab
https://www.youtube.com/watch?v=-Hq1VZVpl-o (https://www.youtube.com/watch?v=-Hq1VZVpl-o)
8)
-
https://www.reddit.com/r/chemistry/comments/spute4/the_ultimate_separation_science_technique/ (https://www.reddit.com/r/chemistry/comments/spute4/the_ultimate_separation_science_technique/)
Hillarious straight from the very beginning!
> Abstract: Nothing we can write is funnier than a journal called Anal. Chem.
-
What Happens When a Liquid Turns Supercritical?
The Action Lab
https://www.youtube.com/watch?v=zv4sE7R8QO4 (https://www.youtube.com/watch?v=zv4sE7R8QO4)
Real magic! :o
-
ASTERNAUTS - Award-winning Sci Fi Comedy Short Film [EN]
MovieBrats Pictures
https://www.youtube.com/watch?v=aYBF2v0pbCM (https://www.youtube.com/watch?v=aYBF2v0pbCM)
:D
-
What do you think?
https://www.youtube.com/watch?v=Ldus7uAeKZU (https://www.youtube.com/watch?v=Ldus7uAeKZU)
-
(https://www.eevblog.com/forum/testgear/soviet-oscilloscopes/?action=dlattach;attach=1419793;image)
Pic stolen from didyman: https://www.eevblog.com/forum/testgear/soviet-oscilloscopes/msg4019920/#msg4019920 (https://www.eevblog.com/forum/testgear/soviet-oscilloscopes/msg4019920/#msg4019920)
;D
-
Same to you!
-
The Engineering Puzzle of Storing Trillions of Bits in your Smartphone / SSD using Quantum Mechanics
https://www.youtube.com/watch?v=5f2xOxRGKqk (https://www.youtube.com/watch?v=5f2xOxRGKqk)
Live long and solder.
Stolen from GreggD.
Live long and solder! 8)
-
https://www.youtube.com/watch?v=Pu97IiO_yDI (https://www.youtube.com/watch?v=Pu97IiO_yDI)
Visiting a metrologist at work. 8)
-
https://www.youtube.com/watch?v=gnwIiw3Rz3I (https://www.youtube.com/watch?v=gnwIiw3Rz3I)
Throwing fast discs. :D
-
https://www.youtube.com/watch?v=GVsUOuSjvcg (https://www.youtube.com/watch?v=GVsUOuSjvcg)
Analog computers are making a comeback, by doing analog matrix multiplication needed in AI by repurposing flash memories cells to do analog multiplication instead of data storage (see from minute 15:50 for how it's done). :-+
-
Dubmood - Mario Airlines
ThePrimeHelios
Artist: Dubmood
https://www.youtube.com/watch?v=Sfs4A-TFd74 (https://www.youtube.com/watch?v=Sfs4A-TFd74)
An 8bit sound-like song 8)
-
Blowing up capacitors - in slow motion!
https://www.youtube.com/watch?v=6WUxgmMDts4 (https://www.youtube.com/watch?v=6WUxgmMDts4)
-
Not sure if this has been posted already...
Suppose you have a right-angled triangle with a shorter side of length 'a' and the hypotenuse has a length of zero, what is the length of the third side?
Hint: use your imagination.
-
-42
-
https://www.youtube.com/watch?v=7gSU_Xes3GQ (https://www.youtube.com/watch?v=7gSU_Xes3GQ)
:o
-
A Briefly Famous Star (and calibrating the JWST)
Sixty Symbols
https://www.youtube.com/watch?v=Zbj8pMfK9Ek (https://www.youtube.com/watch?v=Zbj8pMfK9Ek)
:-+
-
1 / 998001 = 0.000 001 002 003 004 005 006 007 008 009 010 011 012 013 ... 996 997 999 ...
Decimals grouped by 3 are nicely counting up, all but 998 who's missing. :D
python3
>>> from decimal import *
>>> # set precision to 2992 decimals
>>> getcontext().prec = 2992
>>> Decimal(1)/Decimal(998001)
Decimal('0.000001002003004005006007008009010011012013014015016017018019020021022023024025026027028029030031032033034035036037038039040041042043044045046047048049050051052053054055056057058059060061062063064065066067068069070071072073074075076077078079080081082083084085086087088089090091092093094095096097098099100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997999')
>>>
-
How to Make a Schlieren Image of a Tesla Coil
The Action Lab
https://www.youtube.com/watch?v=bQd93rjf8lQ (https://www.youtube.com/watch?v=bQd93rjf8lQ)
>:D
-
How Do Gyroscopes Lift Themselves Up?
The Action Lab
https://www.youtube.com/watch?v=HL9RRLdcSZc (https://www.youtube.com/watch?v=HL9RRLdcSZc)
As if gyroscopes and precession were not hard enough,
Let's put that on rollers and cut it in half... :scared:
;D
-
I'm Back!
Zogg from Betelgeuse
https://www.youtube.com/watch?v=W8GCkPW-OHU (https://www.youtube.com/watch?v=W8GCkPW-OHU)
:-+
-
Marconi magnetic detector demonstration
glasslinger
https://www.youtube.com/watch?v=4CAxWoKD-fw (https://www.youtube.com/watch?v=4CAxWoKD-fw)
:o
-
https://www.youtube.com/watch?v=lBOB9SSdDfU (https://www.youtube.com/watch?v=lBOB9SSdDfU)
-
Series circuit - 3 LEDs
Henryk Gasperowicz
https://www.youtube.com/watch?v=RkTvDjhImwo (https://www.youtube.com/watch?v=RkTvDjhImwo)
;D
-
Honeypot Ants Turn Their Biggest Sisters into Jugs of Nectar
Deep Look
https://www.youtube.com/watch?v=Rid_YW3P8CA (https://www.youtube.com/watch?v=Rid_YW3P8CA)
:o
-
ASMR Satisfying Chip Capacitor Solder Reflow :popcorn:
https://m.youtube.com/watch?v=VMyd0ydGNMA
-
Nice close-up!
Though, it looks like the solder didn't wet to the PCB pads very well, is it? I was expecting the solder to wet the PCB pads, and to flow more on the PCB pads, too, so to to produce a concave solder joint surface. Here, the final solder surface is convex, in the shape of a half small bubble (on the capacitor's pad).
I'm not experienced enough in SMD reflow, isn't it too little solder paste there?
-
I agree with your observations. I cannot speak for the video or the setup that was used. I think the video is intended for demonstration purposes. I think they used a test jig for this, but I don't know.
It looks like the capacitor is 0402 (imperial) or maybe smaller? It might explain the visible solder balls in the paste. It would be interesting to know the soldering standards for Class 1, 2 and 3, etc.
-
Fun with electrical shocks in the 1860's:
https://www.youtube.com/watch?v=_oqbLSisnME (https://www.youtube.com/watch?v=_oqbLSisnME)
;D
-
The book he was talking about: The Magician's Own Book, or, the Whole Art of Conjuring by Arnold and Cahill (https://archive.org/details/magiciansownbook00arno), published in the year 1862. :D
-
1958 "ABOVE AND BEYOND" NASA SOLDER & SOLDERING TECHNIQUES ELECTRONICS INSTRUCTIONAL FILM XD48824
PeriscopeFilm
https://www.youtube.com/watch?v=_RXugDd0xik (https://www.youtube.com/watch?v=_RXugDd0xik)
8)
-
Gridfinity: Your Ultimate Modular Workshop is FREE!
Zack Freedman
https://www.youtube.com/watch?v=ra_9zU-mnl8 (https://www.youtube.com/watch?v=ra_9zU-mnl8)
lab@home:~$ sudo workbench aoutoclean ;D
-
An old clock.
https://www.youtube.com/watch?v=H3xgBS_kDNw (https://www.youtube.com/watch?v=H3xgBS_kDNw)
-
Here are some pictures of the clockworks in the Sather Tower at UC Berkeley:
-
How to make a monolithic telescope
Part 1: Optical design:
https://www.youtube.com/watch?v=awOvnubFE8M (https://www.youtube.com/watch?v=awOvnubFE8M)
Part 2: Machining glass:
https://www.youtube.com/watch?v=A0bysBIj0FA (https://www.youtube.com/watch?v=A0bysBIj0FA)
-
I don't have photos, kinda obviously, but just something neat. On my walk tonight, saw a train of rather fast moving dots in the sky. Looked like a blur at a distance, but was obviously a train of dots once overhead. Which must've been a new launch of satellites. Probably Starlink then?
And indeed, there was a Group 4-14 launch earlier today, so there you have it.
The sighting was approx. 8:40-8:50 pm CDT, which gives you a pretty good idea where I was at. ;D
Tim
-
...
On my walk tonight, saw a train of rather fast moving dots in the sky.
...
:-+
...
And indeed, there was a Group 4-14 launch earlier today, so there you have it.
...
This:
https://www.youtube.com/watch?v=ZNkmhY_ju8o (https://www.youtube.com/watch?v=ZNkmhY_ju8o)
EXCLUSIVE: Buzz Aldrin Confirms UFO Sighting in Syfy's 'Aliens on the Moon'
8)
-
I'm confused. One minute they say that nobody really went to the moon, then the next minute they say there are moon bases all over the other side.
::)
-
The Outer Limits ( 1963-65 ) S01E01 - The Galaxy Being
Monster Horror Mystery Channel
https://www.dailymotion.com/video/x4cmrhr (https://www.dailymotion.com/video/x4cmrhr)
:)
-
I'm confused. One minute they say that nobody really went to the moon, then the next minute they say there are moon bases all over the other side.
::)
These are aliens bases. They were built by aliens. And people from the earth did not fly :)))))))))))))))))
-
Moon bases:
https://www.youtube.com/watch?v=Jth4yATniS4 (https://www.youtube.com/watch?v=Jth4yATniS4)
;D
-
What does the James Webb Use to See the Universe?
Curious Droid
https://www.youtube.com/watch?v=BVByTTYJF3M (https://www.youtube.com/watch?v=BVByTTYJF3M)
8)
-
https://www.dailymotion.com/video/x6i18ft (https://www.dailymotion.com/video/x6i18ft)
-
"Morning, Mr. Freeman. Looks like you're running late. (https://youtu.be/oEgO16JaW4Y)"
Californium (new) - Periodic Table of Videos
Periodic Videos
https://www.youtube.com/watch?v=E0wtKOG8trE (https://www.youtube.com/watch?v=E0wtKOG8trE)
:o
-
How to make an Electrostatic Polarity Detector(Electric Field Detector)
Thomas Kim
https://www.youtube.com/watch?v=WptwVzK7cK0 (https://www.youtube.com/watch?v=WptwVzK7cK0)
Schematic is at minute 7:14 :-DMM
Can be used for this, too:
Lightning Detector Circuit Experiment (Electric Field Detector)
https://www.youtube.com/watch?v=VHtYt_f6fj8 (https://www.youtube.com/watch?v=VHtYt_f6fj8)
:-+
-
Homemade Solar-Powered CNC Engraver
Cranktown City
https://www.youtube.com/watch?v=WO-ny20IhV0 (https://www.youtube.com/watch?v=WO-ny20IhV0)
LASER Fusion engraver head! 8)
-
You have a disconnected mains transformer, and with no load attached (open secondary).
At what moment in the sinusoidal mains voltage do you connect the primary to the mains?
a. During a zero-crossing in the sinusoidal mains voltage. :palm:
b. During a peak voltage in the sinusoidal mains voltage. :-+
???
Why?
ElectronicBits#10: Connecting inductive loads to the power line
Sam Ben-Yaakov
https://www.youtube.com/watch?v=ZbWpc_TfMLM (https://www.youtube.com/watch?v=ZbWpc_TfMLM)
:)
-
The Bit Player | Claude Shannon | Father of Information Theory | IEEE Information Theory Society
Vaibhav Patil
https://www.youtube.com/watch?v=JP1Ljp8X6hg (https://www.youtube.com/watch?v=JP1Ljp8X6hg)
Also found out about Claude Berrou's Turbocodes (https://en.wikipedia.org/wiki/Turbo_code) 8)
Near Shannon Limit Error-Correcting Coding and Decoding: Turbo-Codes (https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.135.9318&rep=rep1&type=pdf)
and discovered the voice of Teddy Grace:
https://www.youtube.com/watch?v=twsXAOPmyvg&list=OLAK5uy_mlQ88bsNfxnXbGdIiqjNOeM05rIaq5SMs&index=17 (https://www.youtube.com/watch?v=twsXAOPmyvg&list=OLAK5uy_mlQ88bsNfxnXbGdIiqjNOeM05rIaq5SMs&index=17)
^-^
-
Making Skin That Moves on Its Own
The Action Lab
https://www.youtube.com/watch?v=-x679Ee8WgQ (https://www.youtube.com/watch?v=-x679Ee8WgQ)
It's alive! :scared:
-
Creating 10 apps in Python with PySimpleGUI
Clear Code
https://www.youtube.com/watch?v=QeMaWQZllhg (https://www.youtube.com/watch?v=QeMaWQZllhg)
:-+
-
A Picture of the Milky Way's Supermassive Black Hole
Veritasium
https://www.youtube.com/watch?v=Q1bSDnuIPbo (https://www.youtube.com/watch?v=Q1bSDnuIPbo)
Phased arrays are cool! 8)
-
Solar, low energy Curie motor
xofunkox-scientific experiments
https://www.youtube.com/watch?v=X_Q0r13tm74 (https://www.youtube.com/watch?v=X_Q0r13tm74)
:)
A 0.2 mm alumel wire is attached to the circumference of a mica disc with thin copper wire. This alloy has a Curie point of 152°C and consists of 90.7% nickel, 3.1% manganese, 4.2% aluminum and 2.0% silicon. The low Curie point and the low-friction bearing allow operation with a 50 mm burning glass.
Source: From the video description
-
20W Fiber Laser Etching PCB Coil
DIY-Optics dot com
https://www.youtube.com/watch?v=a98qVMOqvDs (https://www.youtube.com/watch?v=a98qVMOqvDs)
:o
-
TSP #207 - Teardown & Detailed Analysis of Qualcomm's 60GHz Multi-Panel Phased Array WiGig System
The Signal Path
https://www.youtube.com/watch?v=JI9fvAcNpdk (https://www.youtube.com/watch?v=JI9fvAcNpdk)
:o
-
Slowing The Speed of Light Down To 2 m/s—What Special Relativity Feels Like
The Action Lab
https://www.youtube.com/watch?v=udqihUBGuZ8 (https://www.youtube.com/watch?v=udqihUBGuZ8)
:-//
-
3blue1brown is discussing this little innocent task:
"Find the number of subsets of {1, ..., 2000}, the sum of whose elements is divisible by 5."
https://www.youtube.com/watch?v=bOXCLR3Wric (https://www.youtube.com/watch?v=bOXCLR3Wric)
Spoiler:
It includes complex numbers and a reference to the Riemann Zeta-function.
-
Learning to Teleport
Buttered Side Down
https://www.youtube.com/watch?v=mDY5fTXAfg0 (https://www.youtube.com/watch?v=mDY5fTXAfg0)
^-^
-
https://www.youtube.com/watch?v=5X1erTlXVv0 (https://www.youtube.com/watch?v=5X1erTlXVv0)
-
Magnets are mad crazy, indeed! ;D
Eddy current experiment with HDD components
https://www.youtube.com/watch?v=OAHlAYg4Tok (https://www.youtube.com/watch?v=OAHlAYg4Tok)
Eddy current experiment with big Heat Sink
https://www.youtube.com/watch?v=BS6rI60Sne4 (https://www.youtube.com/watch?v=BS6rI60Sne4)
NETHERLANDS: BRITISH & DUTCH SCIENTISTS MAKE FROG FLOAT IN MID-AIR
https://www.youtube.com/watch?v=KlJsVqc0ywM (https://www.youtube.com/watch?v=KlJsVqc0ywM)
Everything Is Magnetic! Moving Water With Magnets And Levitating Frogs
https://www.youtube.com/watch?v=mMDRqKmqVNs (https://www.youtube.com/watch?v=mMDRqKmqVNs)
Then there is the Levitron, that apparently defies Earnshaw's theorem (https://en.wikipedia.org/wiki/Earnshaw%27s_theorem)
Levitation with the Levitron
https://www.youtube.com/watch?v=GMVtlNbMwHw (https://www.youtube.com/watch?v=GMVtlNbMwHw)
-
Laser Decapsulation SSD CPU RAM
DIY-Optics dot com
https://www.youtube.com/watch?v=ja6jD6UCXYs (https://www.youtube.com/watch?v=ja6jD6UCXYs)
8)
namregpxp, 1 hour ago
How do you got such a machine?
DIY-Optics dot com, 1 hour ago
I bought mine from Cloudray. It's a 20W, 120ns fiber laser with 10kW peak power. You can process with it a variety of materials but mainly metals.. Marking, engraving, cleaning, cutting, heat treatment, decapsulation, color marking, PCB prototyping and a lot more
-
Dynamic balancing with a scope and small speaker
Matthias random stuff
https://www.youtube.com/watch?v=hGGJYXjE5s0 (https://www.youtube.com/watch?v=hGGJYXjE5s0)
:-+
-
How Does The Wyrd Mechanism Work?
The Action Lab
https://www.youtube.com/watch?v=ch7aHTa47Oc (https://www.youtube.com/watch?v=ch7aHTa47Oc)
:o
-
OpenAI Codex Live Demo
OpenAI
https://www.youtube.com/watch?v=SGUCcjHTmGY (https://www.youtube.com/watch?v=SGUCcjHTmGY)
:scared:
-
Mullard is showing how to produce vacuum tubes:
https://www.youtube.com/watch?v=5WCWejeRR_s (https://www.youtube.com/watch?v=5WCWejeRR_s)
-
Can Gyroscopes Provide Free Energy For The Planet?
The Action Lab
https://www.youtube.com/watch?v=HsgG00puMWo (https://www.youtube.com/watch?v=HsgG00puMWo)
:scared:
-
Returning to the moon would be shocking. :P
https://www.youtube.com/watch?v=bK57JJ5MMCA (https://www.youtube.com/watch?v=bK57JJ5MMCA)
-
A review of some games which are quantum physics based by Sabine Hossenfelder:
https://www.youtube.com/watch?v=rdC4QPoAEaA (https://www.youtube.com/watch?v=rdC4QPoAEaA)
-
Mullard is showing how to produce vacuum tubes:
https://www.youtube.com/watch?v=5WCWejeRR_s (https://www.youtube.com/watch?v=5WCWejeRR_s)
Here's how to make one at home:
https://www.youtube.com/watch?v=RKast1BZ_aE (https://www.youtube.com/watch?v=RKast1BZ_aE)
-
Burning Pictures on a Compact Disc Surface
arduinocelentano
Source: https://hackaday.io/project/186303-burning-pictures-on-a-compact-disc-surface
Sources: https://github.com/arduinocelentano/cdimage
(https://cdn.hackaday.io/images/8319151657431940854.jpg)
^-^
-
That's really burning a disk image.
-
I've learnt something new about Star Trek.
https://www.youtube.com/watch?v=p7598IX5N2c (https://www.youtube.com/watch?v=p7598IX5N2c)
-
How Does The Anti-Gravity Wheel Work?
The Action Lab
https://www.youtube.com/watch?v=pwx12kwgOAM (https://www.youtube.com/watch?v=pwx12kwgOAM)
???
-
Iodine Satellites - Periodic Table of Videos
Periodic Videos
https://www.youtube.com/watch?v=T4ljJyIrakg (https://www.youtube.com/watch?v=T4ljJyIrakg)
:-+
-
DIY Adaptive Optics?
https://www.youtube.com/watch?v=2eiaW2Memqc (https://www.youtube.com/watch?v=2eiaW2Memqc)
:)
-
After finding out that Intel 4004 was not the first microprocessor (https://www.eevblog.com/forum/chat/fun-for-nerds/msg3990257/#msg3990257), now this, transistor 25 years before the transistor: :palm:
Losev conducted some of the earliest research into semiconductors, publishing 43 papers and receiving 16 "author's certificates" (the Soviet version of patents) for his discoveries. He observed light emission from carborundum point-contact junctions, constructing a light-emitting diode (LED), did the first research on them, proposed the first correct theory of how they worked, and used them in practical applications such as electroluminescence. He explored negative resistance in semiconductor junctions, and was first to use them practically for amplification, building the first solid-state amplifiers, electronic oscillators, and superheterodyne radio receivers, 25 years before the invention of the transistor.
From: https://en.wikipedia.org/wiki/Oleg_Losev#Solid-state_electronics (https://en.wikipedia.org/wiki/Oleg_Losev#Solid-state_electronics)
My entire life is a lie.
;D
-
https://www.youtube.com/watch?v=lqJbJYViUog (https://www.youtube.com/watch?v=lqJbJYViUog)
-
Voyager 1 and 2 Detected Something Beyond the Edge of Our Solar System
Astrum
https://www.youtube.com/watch?v=xWlXDRsfYAA (https://www.youtube.com/watch?v=xWlXDRsfYAA)
:o
-
Superposition in Quantum Computers - Computerphile
Computerphile
https://www.youtube.com/watch?v=kv-YXKRUheQ (https://www.youtube.com/watch?v=kv-YXKRUheQ)
Yes, that's exactly why I think it can be done with analog (AC) computing and no zombie cats thank you! :-+
-
The Microscope Upgrades We've Made Along The Way | Compilation
Journey to the Microcosmos
https://www.youtube.com/watch?v=XHagS6PT4Dg (https://www.youtube.com/watch?v=XHagS6PT4Dg)
^-^
-
Are We Living In a Dream?
The Action Lab
https://www.youtube.com/watch?v=PFDm4Ipnn4I (https://www.youtube.com/watch?v=PFDm4Ipnn4I)
:scared: - OMG, OMG, so it's not turtles all the way down?!
8) - Nope. It's Inception all the way down.
-
https://www.youtube.com/watch?v=SH3lR2GLgT0 (https://www.youtube.com/watch?v=SH3lR2GLgT0)
-
TNP #20 - Teardown, Repair & Experiments with Stanford Research Systems SR830 DSP Lock-in Amplifier
https://www.youtube.com/c/Thesignalpath (https://www.youtube.com/c/Thesignalpath)
https://www.youtube.com/watch?v=figDqnsQD88 (https://www.youtube.com/watch?v=figDqnsQD88)
Neat way to match diodes! :-+
Same idea (of building a symmetric circuit then measure the symmetry of its waveform by looking at the second harmonic) should work to pair any other type of non linear components, too. :D
-
I think Shatner is going to out live the rest of them.
Whose with me?
-
4K CABVIEW: Aurora borealis, northern lights, visible in August! 🤩
RailCowGirl
https://www.youtube.com/watch?v=Nvm0Z-_RIJk (https://www.youtube.com/watch?v=Nvm0Z-_RIJk)
^-^
-
The Nescafé Equation (43 coffee beans) - Numberphile
Numberphile
https://www.youtube.com/watch?v=3V84Bi-mzQM (https://www.youtube.com/watch?v=3V84Bi-mzQM)
:-DMM
The fuel consumption of a car is 5 liters / 100km.
1L == 0.001m3
100km == 100 000m
1m == 1 000mm
5L/100km == 5*0.001m3/100000m == 0.05x10-6m2 == 0.05(mm)2
so the fuel consumption of that car is fifty mili square-milimeters. ;D
-
Bell Labs - The Company that Invented the Future
Curious Droid
https://www.youtube.com/watch?v=eksTJOmlxbU (https://www.youtube.com/watch?v=eksTJOmlxbU)
8)
-
Neat visibility demo: https://moxil-shah.github.io/Isovist-Sandbox/ (https://moxil-shah.github.io/Isovist-Sandbox/)
Wonder if they're going to put a 3D view on it sometime, heh.
I'm reminded of some demos (https://www.seventransistorlabs.com/Images/LinesApplet2.png) I did years ago. :)
Tim
-
An intuitive explanation of fractional turn transformers
Sam Ben-Yaakov
https://www.youtube.com/watch?v=gRTNAjCe9vw (https://www.youtube.com/watch?v=gRTNAjCe9vw)
:-+
-
World's Highest Jumping Robot
Veritasium
https://www.youtube.com/watch?v=daaDuC1kbds (https://www.youtube.com/watch?v=daaDuC1kbds)
:-+
-
How does Starlink Satellite Internet Work?
Branch Education
https://www.youtube.com/watch?v=qs2QcycggWU (https://www.youtube.com/watch?v=qs2QcycggWU)
:clap: for the content quality, clarity, and for the outstanding CGI.
A teardown of the real thing:
TSP #181 - Starlink Dish Phased Array Design, Architecture & RF In-depth Analysis
The Signal Path
https://www.youtube.com/watch?v=h6MfM8EFkGg (https://www.youtube.com/watch?v=h6MfM8EFkGg)
:-+
-
How We Accidentally Started Making Infinite Robots
Real Science
https://www.youtube.com/watch?v=u1l4aXh1UG8 (https://www.youtube.com/watch?v=u1l4aXh1UG8)
:scared:
-
Nanotech Video Vinyl: The Remarkable CED | Micrographia
Breaking Taps
https://www.youtube.com/watch?v=zIbyxtJ1H8k (https://www.youtube.com/watch?v=zIbyxtJ1H8k)
^-^
-
https://www.youtube.com/watch?v=uV1C-41tq64 (https://www.youtube.com/watch?v=uV1C-41tq64)
-
video: New (LTE) Rotary Cell Phone
Doesn't fit into a shoe. :--
;)
-
Wavelets: a mathematical microscope
Artem Kirsanov
https://www.youtube.com/watch?v=jnxqHcObNK4 (https://www.youtube.com/watch?v=jnxqHcObNK4)
Great visualizations! :-+
or, for less video and more text, "The Wavelet Tutorial" by Robi Polikar:
https://www.eevblog.com/forum/chat/fun-for-nerds/msg3554257/#msg3554257 (https://www.eevblog.com/forum/chat/fun-for-nerds/msg3554257/#msg3554257)
-
100 Unsolved Mysteries That Cannot Be Explained | Compilation
Unexplained Mysteries
https://www.youtube.com/watch?v=sM0O9ASGbxU (https://www.youtube.com/watch?v=sM0O9ASGbxU)
:scared:
-
Aliens.
-
Aliens.
… that need runways.
-
runways or runaways :o
-
3D rendering of a wave guide
Nils Berglund
https://www.youtube.com/watch?v=Yl2RJCub0Iw (https://www.youtube.com/watch?v=Yl2RJCub0Iw)
^-^
-
This time with the wave reflected back. First half of the video shows the wave amplitude, second half the energy.
A W-shaped wave guide
Nils Berglund
https://www.youtube.com/watch?v=yavj84JWjOA (https://www.youtube.com/watch?v=yavj84JWjOA)
Physicist Dad Jokes: Have you noticed the cat in the video? ;D
(sɔᴉʇbo ɹǝqᴉɟ ɥƃnoɹɥʇ plɹoʍ ǝɥʇ punoɹɐ lǝʌɐɹʇ sʇɐɔ ʍoɥ sᴉ sᴉɥꞱ)
-
runways or runaways :o
Yes.
-
Voyage through Time - a Generative AI journey
Neural Synesthesia
https://www.youtube.com/watch?v=Bo3VZCjDhGI (https://www.youtube.com/watch?v=Bo3VZCjDhGI)
^-^
...
This video was made with StableDiffusion ( https://github.com/CompVis/stable-diffusion (https://github.com/CompVis/stable-diffusion) ), combining 36 prompts in a single, seamless video morph taking you on a trip through evolution.
:scared:
-
https://www.youtube.com/watch?v=518-lOf6M_s (https://www.youtube.com/watch?v=518-lOf6M_s)
-
Math videos:
No particular video to link here, but an introduction of some very, very good ones!
https://www.youtube.com/watch?v=cDofhN-RJqg (https://www.youtube.com/watch?v=cDofhN-RJqg)
Topics range from arithmetic (especially in less usual number systems: group theory, abstract algebra, etc.) to calculus and more!
Tim
-
Michael Levin: Biology, Life, Aliens, Evolution, Embryogenesis & Xenobots | Lex Fridman Podcast #325
https://www.youtube.com/watch?v=p3lsYlod5OU (https://www.youtube.com/watch?v=p3lsYlod5OU)
:o
-
Whether array indexing should start at 0 or at 1 comes up every now and then. Especially when programming language proponents argue. (It was once a hot topic between Fortran and C proponents, for example.)
I'm firmly in the zero camp... except when it comes to binary search trees stored in an array, then I insist on indexing starting at 1. The reason is this:
(https://www.nominal-animal.net/answers/binary-tree-indexing.svg)
Upper, red numbers indicate the index to the node, if the tree were to use array representation. They increment from top to bottom (and on each row, from left to right).
The lower, blue numbers indicate the value in the node, or equivalently the sort order of the node. They increment strictly from left to right, this being a binary search tree.
The green numbers indicate path from the root node, with 0 left and 1 right, each descent adding a new binary digit to the right.
If you prepend a binary 1 to each binary path (in green) from root to a node, you get the binary representation of the target node index (in red). Including to the root node itself, 1.
If you have N levels, and therefore \$2^N-1\$ nodes, and use \$i\$ for the (red) node index, and \$k\$ for the (blue) node sort orders, \$1 \le i, k \le 2^N - 1\$, then
$$\begin{aligned}
k(i, N) &= \left( i - 2^{\lfloor \log_2 i \rfloor} \right) 2^{N - \lfloor \log_2 i \rfloor} + 2^{N - \lfloor \log_2 i \rfloor - 1} \\
i(k, N) &= \frac{G\left(k + 2^N\right) - 1}{2} \\
\end{aligned}$$
where \$G(x)\$ is the largest odd multiplier of \$x\$, i.e.
$$G(x) = \left\lbrace \begin{matrix}
x, & \text{if } x \text{ is odd} \\
G(x/2), & \text{if } x \text{ is even} \\
\end{matrix} \right.$$
Furthermore, the index (red) for the bottom-rightmost node is \$2^N-1\$, and the index of the leftmost node on level \$n\$, \$1 \le n \le N\$, is \$2^{n-1}\$, with the node index incrementing by \$2^n\$ to the next node on the right on that same level, and the index of the rightmost node is \$2^n-1\$.
(The above formulae tell you, for example, how to convert a sorted array (of \$2^N-1\$ elements) to a perfect binary search tree, and vice versa, using direct assignments in a single pass over the source array.)
You can find a lot more very easy mappings, but really, only when the indexing starts at 1. If you start the indexing at 0, one would think it just adds some \$+1\$ and \$-1\$ above (which is true), but it is much harder to derive the formulae, then. (I know, because I derived all these myself from scratch in 2016. I'm sure someone else discovered all these before me, I don't claim to be the discoverer; I'm just saying that switching to one-based indexing was the trick that helped me discover these.)
For those interested in the integer sequences involved, \$G(x)\$ is OEIS A000265 (https://oeis.org/A000265), \$k(i,N)\$ is a variant of OEIS A131987 (https://oeis.org/A131987), and \$i(k,N)\$ is a variant of OEIS A101279 (https://oeis.org/A101279).
-
[attachimg=1]
-
Stable Diffusion in Code (AI Image Generation) - Computerphile
Computerphile
https://www.youtube.com/watch?v=-lz30by8-sU (https://www.youtube.com/watch?v=-lz30by8-sU)
8)
(Might need to watch this previous video, too, How AI Image Generators Work (Stable Diffusion / Dall-E) - Computerphile (https://youtu.be/1CIpzeNxIhU) to make more sense about what he's doing.)
-
:scared:
\$\ \sqrt{2}^\sqrt{2} \$
\$\ \sqrt{2}=2^\frac{1}{2} \$
\$\ \frac{1}{2}=2^{-1} \$
\$\ -1 = -(2^0) \$
\$\ 2^{2^{-(2^0)}} \$
\$\ (2^{2^{-(2^0)}})^{({2^{2^{-(2^0)}}})} \$
\$\ 2^{(2^{-(2^0)}) \times (-(2^0))} = 2^\frac{-1}{2} \$
\$\ \sqrt{2}^\sqrt{2} = 2^{2^\frac{-1}{2}} \$
-
For those wondering about my algebra post, it's from BriTheMathGuy on YouTube.
Here's the link:
"This Will Be Your Favorite Simple Problem" (https://youtu.be/4lvk7lYQ1RQ)
-
Something you never expected to see on the official Raspberry Pi web site:
https://www.raspberrypi.com/news/polefx-livens-up-acrobatic-dance-with-raspberry-pi-magpi-123/ (https://www.raspberrypi.com/news/polefx-livens-up-acrobatic-dance-with-raspberry-pi-magpi-123/)
-
World's Largest Swiss Army Knife ! 64 Functions
The Maker
https://www.youtube.com/watch?v=yChzA3Ayvus (https://www.youtube.com/watch?v=yChzA3Ayvus)
:D
-
Halloween Tryouts
Buttered Side Down
https://www.youtube.com/watch?v=MOirLSrm9J8 (https://www.youtube.com/watch?v=MOirLSrm9J8)
;D
-
https://www.youtube.com/watch?v=d19P7vSr1P8 (https://www.youtube.com/watch?v=d19P7vSr1P8)
-
https://www.youtube.com/watch?v=851U557j6HE (https://www.youtube.com/watch?v=851U557j6HE)
Don't let the thumbnail fool you...(or it won't, if you know). It's a quirky hook into the subject of convolution, Fourier and so on.
-
The Electromagnetic field, how Electric and Magnetic forces arise
ScienceClic English
https://www.youtube.com/watch?v=XoVW7CRR5JY (https://www.youtube.com/watch?v=XoVW7CRR5JY)
:-DMM
Electric Circuit Components
Physics Videos by Eugene Khutoryansky
https://www.youtube.com/watch?v=ggC58hQCX38 (https://www.youtube.com/watch?v=ggC58hQCX38)
;D
-
The Most Important Algorithm Of All Time
Veritasium
https://www.youtube.com/watch?v=nmgFG7PUHfo (https://www.youtube.com/watch?v=nmgFG7PUHfo)
:-+
-
When Green is Red—Making Plants Bleed
The Action Lab
https://www.youtube.com/watch?v=_tK8q7wAmy0 (https://www.youtube.com/watch?v=_tK8q7wAmy0)
:o
-
Looking Glass Universe - I did the double slit experiment at home
https://m.youtube.com/watch?v=v_uBaBuarEM
-
But what is a convolution?
3Blue1Brown
https://www.youtube.com/watch?v=KuXjwB4LzSA (https://www.youtube.com/watch?v=KuXjwB4LzSA)
^-^
-
The Fast Fourier Transform (FFT): Most Ingenious Algorithm Ever?
Reducible
https://www.youtube.com/watch?v=h7apO7q16V0 (https://www.youtube.com/watch?v=h7apO7q16V0)
:o 8)
-
The Turntable Paradox
Steve Mould
https://www.youtube.com/watch?v=3oM7hX3UUEU (https://www.youtube.com/watch?v=3oM7hX3UUEU)
:o
-
Mechanical circuits: electronics without electricity
Steve Mould
https://www.youtube.com/watch?v=QrkiJZKJfpY (https://www.youtube.com/watch?v=QrkiJZKJfpY)
:D
-
Amazing Shade Illusion!
brusspup
https://www.youtube.com/watch?v=2RFffta35MY (https://www.youtube.com/watch?v=2RFffta35MY)
;D
-
TNP #26 - Magic of Mechanical Timekeeping & Measuring the Accuracy of a Raymond-Weil Skeleton Watch
The Signal Path
https://m.youtube.com/watch?v=DEhWEKGwG2s
What If Swings Had Springs Instead Of Ropes: Autoparametric Resonance
Steve Mould
https://m.youtube.com/watch?v=MUJmKl7QfDU
At 9:15 and 11:05 he talks about coupled pendulums.
(https://upload.wikimedia.org/wikipedia/commons/4/43/Coupled_oscillators.gif)
Source: en.m.wikipedia.org/wiki/Oscillation#Coupled_oscillations
-
This fake dog nose made chemical sensors 18x better
Veritasium
https://www.youtube.com/watch?v=TILjzuBGkRc (https://www.youtube.com/watch?v=TILjzuBGkRc)
:-+
-
I Asked An Actual Apollo Engineer to Explain the Saturn 5 Rocket - Smarter Every Day 280
https://www.youtube.com/watch?v=1nLHIM2IPRY (https://www.youtube.com/watch?v=1nLHIM2IPRY)
8)
Later added:
I Asked An Actual Apollo Engineer to Explain the Saturn 5 Rocket (Long Cut) - Smarter Every Day 2 (https://youtu.be/cUkbdqw9pBk)
-
8)
And looking even further out..
https://www.youtube.com/watch?v=SkGRVvA23qI (https://www.youtube.com/watch?v=SkGRVvA23qI)
-
Ferrofluid Could Be The Future of Space Propulsion
The Action Lab
https://www.youtube.com/watch?v=lzbpEo5b1lI (https://www.youtube.com/watch?v=lzbpEo5b1lI)
:)
-
Made by the spider from the EEVblog lab?
-
I think the spider wants to listen to radio, its a PCB antenna without the PCB, what wavelength does it look to be tuned for?
-
Made by the spider from the EEVblog lab?
If I'm not mistaken, the spider was drugged.
-
Time for some 4D hyperbolic spacetime:
https://www.youtube.com/watch?v=Ln69789fGoQ (https://www.youtube.com/watch?v=Ln69789fGoQ)
-
SMD and PCB Holder
By olikraus
(https://content.instructables.com/FLP/09K8/LCETAPLT/FLP09K8LCETAPLT.jpg?auto=webp&frame=1&width=1024&height=1024&fit=bounds&md=834494e7c92c454a951ddd7992948ff8)
A PCB holder made from wood. Magnetical PCB clamps and SMD part fixing clamp.
Source: https://www.instructables.com/SMD-and-PCB-Holder/ (https://www.instructables.com/SMD-and-PCB-Holder/)
:-+
-
750 million years ago
Cryogenian Period. Glaciers may have covered the entire planet during the greatest ice age known on Earth. New types of life such as red and green algae appear during this period.
600 million years ago
Ediacaran Period. Life is evolving in the sea, and multicellular life is just beginning to emerge. The Pannotia supercontinent is a major landmass.
540 million years ago
Early Cambrian. A mass extinction has just taken place. Afterwards, the fossil record shows a dramatic expansion of animal life in the sea, known as the "Cambrian explosion." Animals are beginning to evolve shells and exoskeletons.
500 million years ago
Late Cambrian. The ocean is teeming with life following a dramatic expansion of animal diversity in the sea, known as the "Cambrian explosion." The forms of some animals show ancestry to modern animals. Jawless fish, the first vertebrates, appear.
470 million years ago
Ordovician Period. The seas are diverse and the first coral reefs emerge. Algae is the only multicellular plant, and there is still no complex life on land.
450 million years ago
Late Ordovician. The seas are diverse and the first coral reefs have emerged. Algae is the only multicellular plant, and there is still no complex life on land. A mass extinction is about to take place.
430 million years ago
Silurian Period. A mass extinction took place, wiping out nearly half of marine invertebrate species. The first land plants emerge, starting at the edge of the ocean. Plants evolve vascularity, the ability to transport water and nutrients through their tissues. Ocean life becomes larger and more complex, and some creatures venture out of reefs and onto land.
400 million years ago
Devonian Period. Life on land becomes more complex as plants develop. Insects diversify and fish develop sturdy fins, which eventually evolve into limbs. The first vertebrates walk on land. Oceans and coral reefs host a diverse range of fish, sharks, sea scorpions, and cephalopods.
370 million years ago
Late Devonian. Life on land becomes more complex as plants develop. Insects diversify and fish develop sturdy fins, which eventually evolve into limbs. The first vertebrates walk on land. Oceans and coral reefs host a diverse range of fish, sharks, sea scorpions, and cephalopods. A mass extinction is about to take place that will stress marine life.
340 million years ago
Carboniferous Period. A mass extinction harmed marine life, but land organisms adapted. Plants are developing root systems that allowed them to grow larger and move inland. Environments are evolving below tree canopies. Atmospheric oxygen increases as plants spread on land. Early reptiles are evolving.
300 million years ago
Late Carboniferous. Plants developed root systems that allowed them to grow larger and move inland. Environments evolved below tree canopies. Atmospheric oxygen increased as plants spread on land. Early reptiles have evolved, and giant insects diversify.
280 million years ago
Permian Period. Landmasses merged and formed the supercontinent Pangea. Extreme conditions such as polar ice caps and deserts limited the extent of plant life, but amphibious tetrapods and reptiles diversified where plants grew. Oceans teemed with fish and invertebrate life.
260 million years ago
Late Permian. The greatest mass extinction in history is about to take place, driving 90% of species extinct. The extinction of plants reduced food supply for large herbivorous reptiles, and removed habitat for insects.
240 million years ago
Early Triassic. Oxygen levels are significantly lower due to the extinction of many land plants. Many corals went extinct, with reefs taking millions of years to re-form. Small ancestors to birds, mammals, and dinosaurs survive on the Pangaea supercontinent.
220 million years ago
Middle Triassic. The Earth is recovering from the Permian-Triassic extinction. Small dinosaurs begin to appear. Therapsids and archosaurs emerge, along with the first flying vertebrates.
200 million years ago
Late Triassic. An extinction event is about to happen, resulting in the disappearance of 76% of all terrestrial and marine life species and greatly reducing surviving populations. Some families, such as pterosaurs, crocodiles, mammals, and fish were minimally affected. The first true dinosaurs emerge.
170 million years ago
Jurassic Period. Dinosaurs thrived as the first mammals and birds evolved. Ocean life diversified and the Earth was very warm.
150 million years ago
Late Jurassic. The earliest lizards have appeared and primitive placental mammals have evolved. Dinosaurs dominate both landmasses. Large marine reptiles inhabited the ocean, and pterosaurs were the dominant flying vertebrates.
120 million years ago
Early Cretaceous. The world is warm and has no polar ice caps. Large reptiles dominate and mammals remained small. Flowering plants evolve and spread throughout the world.
105 million years ago
Cretaceous Period. Ceratopsian and pachycephalosaurid dinosaurs evolve. Modern mammal, bird, and insect groups emerge.
90 million years ago
Cretaceous Period. Ceratopsian and pachycephalosaurid dinosaurs evolve. Modern mammal, bird, and insect groups emerge.
66 million years ago
Late Cretaceous. A mass extinction occurs, leading to the extinction of dinosaurs, many marine reptiles, all flying reptiles, and many marine invertebrates and other species. Scientists believe the extinction was caused by an asteroid impact on the present-day Yucatan Peninsula in Mexico.
50 million years ago
Early Tertiary. Following the asteroid impact that killed the dinosaurs, surviving birds, mammals, and reptiles diversified. Early whales evolved from land mammals.
35 million years ago
Mid Tertiary. Mammals have evolved from small, simple forms to a diverse group. Primates, cetaceans, and other groups evolve. The Earth cools and deciduous plants become more common.
20 million years ago
Neocene Period. Mammals and birds continue to evolve into modern forms. Early hominids emerge in Africa.
0 million years ago
You are here. :)
Wanna see it?
https://dinosaurpictures.org/ancient-earth#240
Click&drag to browse through space, left/right arrows to browse through time. 8)
-
Game of Life on steroids:
https://www.youtube.com/watch?v=p4YirERTVF0&ab_channel=TomMohr (https://www.youtube.com/watch?v=p4YirERTVF0&ab_channel=TomMohr)
-
What is Heisenberg's Uncertainty Principle?
Physics Explained
https://www.youtube.com/watch?v=FRP4AqZR3UU (https://www.youtube.com/watch?v=FRP4AqZR3UU)
:-+
-
Self-Soldering Circuits
Carl Bugeja
https://www.youtube.com/watch?v=r0csHZveVvY (https://www.youtube.com/watch?v=r0csHZveVvY)
:D
-
https://www.youtube.com/watch?v=yYEMxqreA10 (https://www.youtube.com/watch?v=yYEMxqreA10)
-
Identify chemicals with radio frequencies - Nuclear Quadrupole Resonance (MRI without magnets)
Applied Science
https://www.youtube.com/watch?v=JO_EHceV9sk (https://www.youtube.com/watch?v=JO_EHceV9sk)
8)
-
How Electricity Brings Order To Chaos
Journey to the Microcosmos
https://www.youtube.com/watch?v=m5Lp6Fi5B2s (https://www.youtube.com/watch?v=m5Lp6Fi5B2s)
;D
-
This microscope uses touch
Steve Mould
https://www.youtube.com/watch?v=qtQ4rK66vlE (https://www.youtube.com/watch?v=qtQ4rK66vlE)
:D
https://people.csail.mit.edu/kimo/publications/microgeometry/microgeometry.pdf (https://people.csail.mit.edu/kimo/publications/microgeometry/microgeometry.pdf)
-
A small asteroid hits the channel between France and England:
https://twitter.com/timtrice/status/1624967004246495232 (https://twitter.com/timtrice/status/1624967004246495232)
Watch the video around timestamp=15s from the beginning.
-
Earthworm Love is Cuddly ... and Complicated | Deep Look
Deep Look
https://www.youtube.com/watch?v=xjpo6OkuYy0 (https://www.youtube.com/watch?v=xjpo6OkuYy0)
???
-
Ever wanted to do a hologram? Here is a construction method for a DIY hologram technique:
https://www.youtube.com/watch?v=sv-38lwV6vc (https://www.youtube.com/watch?v=sv-38lwV6vc)
-
Fusion reactor runs for more than 8 minutes in a row:
https://www.youtube.com/watch?v=GTmje2qsVgY (https://www.youtube.com/watch?v=GTmje2qsVgY)
-
C compiler tries to disprove Fermat's Last Theorem:
https://blog.regehr.org/archives/140
-
This explains the Riemann Hypothesis better than anything else I've seen:
https://www.youtube.com/watch?v=mfz2dThah_Q (https://www.youtube.com/watch?v=mfz2dThah_Q)
May also be of interest, for complex analysis / calculus background:
https://www.youtube.com/watch?v=uKqC5uHjE4g (https://www.youtube.com/watch?v=uKqC5uHjE4g)
-
Reddit's Engineering Porn (https://www.reddit.com/r/EngineeringPorn/) and Mechanical GIFS (https://www.reddit.com/r/mechanical_gifs/) sites are great for quick browsing of interesting things...
-
I am always exploring new activities in the online market in my free time by following Reddit communities.
-
What Does an Electron Look Like?
The Action Lab
https://www.youtube.com/watch?v=zZ5ww6aYAZ8 (https://www.youtube.com/watch?v=zZ5ww6aYAZ8)
???
-
ESA’s million-year time machine
Curious Droid
https://www.youtube.com/watch?v=P2QfsqcyNqI (https://www.youtube.com/watch?v=P2QfsqcyNqI)
^-^
-
#366: Back to Basics: Basics of the Bipolar Transistor - NPN and PNP
w2aew
https://www.youtube.com/watch?v=IrAUC4ZoNYY (https://www.youtube.com/watch?v=IrAUC4ZoNYY)
:-+
-
Not joking, this failed capacitor on a friend's TV (Shorted) came signaled from factory :-DD
-
The INSANE Precision of The National Institute of Standards and Technology
Machine Thinking
https://www.youtube.com/watch?v=uCyU97MoHFM (https://www.youtube.com/watch?v=uCyU97MoHFM)
:o
-
https://www.youtube.com/watch?v=fUFM0XGTRg8 (https://www.youtube.com/watch?v=fUFM0XGTRg8)
Anyone want to try to outdo it? I'm thinking it can easily be done with a bunch of high power green LEDs, but it would just end up a rather expensive toy.
-
Do Superconductors Attract Each Other?
The Action Lab
https://www.youtube.com/watch?v=RnxlTz8nuaU (https://www.youtube.com/watch?v=RnxlTz8nuaU)
???
-
World's Strongest Magnet!
Veritasium
https://www.youtube.com/watch?v=g0amdIcZt5I (https://www.youtube.com/watch?v=g0amdIcZt5I)
:scared:
-
The first episode of a total series of six episodes about The Great Seal Bug from the Machining and Microwaves channel:
https://www.youtube.com/watch?v=GyryQltyDwA (https://www.youtube.com/watch?v=GyryQltyDwA)
-
56 transition controls for a triple inverted pendulum :o :scared:
https://www.youtube.com/watch?v=I5GvwWKkBmg (https://www.youtube.com/watch?v=I5GvwWKkBmg)
-
What Does The Strong Nuclear Force Look Like?
The Action Lab
https://www.youtube.com/watch?v=Rx4lNihOT4U (https://www.youtube.com/watch?v=Rx4lNihOT4U)
:D
-
https://www.youtube.com/watch?v=JUbPuZQe-O0 (https://www.youtube.com/watch?v=JUbPuZQe-O0)
-
Galileo bad :rant:
https://intellectualmathematics.com/opinionated-history-of-mathematics/
;D
-
SOLENOIDS & RELAYS - The Secret Life of Components, a series of guides for makers and designers - 15
tim hunkin
https://www.youtube.com/watch?v=fdj_g_1tj4c (https://www.youtube.com/watch?v=fdj_g_1tj4c)
:D
-
Make a PCB with 3D printer, UV led and photosensitive film
Wil Straver
https://www.youtube.com/watch?v=hj7iFZknBrQ (https://www.youtube.com/watch?v=hj7iFZknBrQ)
:-+
-
The Stern-Gerlach Experiment (ESI 1967)
TSG Physics
https://www.youtube.com/watch?v=AcTqcyv-V1I (https://www.youtube.com/watch?v=AcTqcyv-V1I)
8)
-
Imaginary Numbers Are Real
Welch Labs
https://www.youtube.com/playlist?list=PLiaHhY2iBX9g6KIvZ_703G3KJXapKkNaF (https://www.youtube.com/playlist?list=PLiaHhY2iBX9g6KIvZ_703G3KJXapKkNaF)
:-+
"That this subject [imaginary numbers] has hitherto been surrounded by mysterious obscurity, is to be attributed largely to an ill adapted notation. If, for example, +1, -1, and the square root of -1 had been called direct, inverse and lateral units, instead of positive, negative and imaginary (or even impossible), such an obscurity would have been out of the question." - Gauss
-
Weird...
https://spectrum.ieee.org/piezoelectric-liquid
Wonder what kinds of useful things could come of it? Doesn't make much sense to me offhand. To be clear, I'm more than satisfied with understanding it as a research curiosity if nothing else.
Tim
-
Weird...
https://spectrum.ieee.org/piezoelectric-liquid
Wonder what kinds of useful things could come of it? Doesn't make much sense to me offhand. To be clear, I'm more than satisfied with understanding it as a research curiosity if nothing else.
Tim
From the i3e link:
Conversely, an electric charge applied to these materials distorts their structures.
I know water, too, can be shaped with high voltage (electrowetting (https://en.wikipedia.org/wiki/Electrowetting)). Makes me wonder if water can be piezoelectric, too. ???
If so, might explain why a hit in the head can knock out one unconscious: it's the electric shock generated by the piezo-water inside the brain. ;D
There was someone making electrically-controlled focus-tunable lenses, where the focal distance of a single lens was controlled by a voltage, no motors, based on electrowetting. Thought his electro-lenses were oil based IIRC, a French guy some 10 years ago or so.
-
I know water, too, can be shaped with high voltage (electrowetting (https://en.wikipedia.org/wiki/Electrowetting)). Makes me wonder if water can be piezoelectric, too. ???
If so, might explain why a hit in the head can knock out one unconscious: it's the electric shock generated by the piezo-water inside the brain. ;D
There was someone making electrically-controlled focus-tunable lenses, where the focal distance of a single lens was controlled by a voltage, no motors, based on electrowetting. Thought his electro-lenses were oil based IIRC, a French guy some 10 years ago or so.
But that's a surface effect -- not bulk. Field strength modifying surface tension at the boundary makes sense. (Most dramatic example: alkali metals apparently explode with a transitional hedgehog state, massively increasing the surface area in an instant!) Or even more mundane: force deflecting an elastic diaphragm; a condenser mic (or the inverse).
Bulk doesn't make much sense, because both the force and the charge can just redistribute. Or it ain't a liquid!
I suspect they've got some kind of gel phase, or something rheology, or maybe liquid crystal something, going on, so it's sorta liquid but not; or it's a dynamic effect, and only works on time scales above the dipole relaxation rate (which happens to be unusually low in the material, at the temperature tested). But the article doesn't really say anything about that...
Tim
-
Makes me wonder if water can be piezoelectric, too.
Snowflakes are triboelectric.
If so, might explain why a hit in the head can knock out one unconscious: it's the electric shock generated by the piezo-water inside the brain. ;D
No, it's typically the brain hitting the skull knocking neurons off-kilter, with unconsciousness resulting from the brain shutting down unnecessary operation to protect itself.
Besides, while cerebrospinal fluid is 99% water, it has a lot of other stuff too. Its properties differ quite a bit from water.
-
Indeed, we are more like walking bags of seawater. ;D
Stepped out of the oceans once, wondering on land since.
-
No, it's typically the brain hitting the skull knocking neurons off-kilter, with unconsciousness resulting from the brain shutting down unnecessary operation to protect itself.
Besides, while cerebrospinal fluid is 99% water, it has a lot of other stuff too. Its properties differ quite a bit from water.
Handegg (incorrectly called "football" in the US) is under criticism for causing brain damage.
https://www.youtube.com/watch?v=Zzbxrnm7jXc (https://www.youtube.com/watch?v=Zzbxrnm7jXc)
-
No, it's typically the brain hitting the skull knocking neurons off-kilter, with unconsciousness resulting from the brain shutting down unnecessary operation to protect itself.
Besides, while cerebrospinal fluid is 99% water, it has a lot of other stuff too. Its properties differ quite a bit from water.
Handegg (incorrectly called "football" in the US) is under criticism for causing brain damage.
The density of the cerebrospinal fluid is such that the brain is very close to neutrally buoyant, i.e. "weightless" within our skulls. It really cannot support even its own weight without the fluid; and overpressure is similarly deadly. Trepanation is one of the oldest surgeries known from prehistoric findings, and skulls that show significant healing (years, even decades) after trepanation are not rare. There is sufficient evidence and historical record to show that this was not a religious practice, but a therapeutic one, applied to specific types of head wounds.
There are brain specialists who believe boxing with gloves is more dangerous to humans than barehanded boxing, because the gloves let humans hit much harder than they can barehanded. It would be interesting to compare handegg and rugby statistics, as the difference is somewhat similar.
Falling on your face or back on sand or grass is unlikely to do much damage (unless you twist your limb or fall on top of something), but falling on concrete or asphalt and hitting your head can easily kill you. The exact acceleration profile matters; it is not a total energy or momentum transfer thing.
-
Have had a former rugby player as a coworker at some point. He told us it's even tougher than it seems.
The impact from falling is not the worst, from what told us once at a beer. During a fall, there still is plenty of time to react. The worst are those actions you don't have time to react. For example, he was telling how an action as simple as grabbing one's arm while running from opposite directions can have a tremendous impact. The initiator knows what action will perform next and prepares for it, while the other dude don't. The effect is that there is no time to react, the body turns from the momentum of grabbing, then suddenly stops. My understanding was that the effect of such a grab would be similar with that seen in the tip of a whip. He said he would prefer a hit in the face in a fist fight, rather than that shock that propagates through the entire body during an unforeseen grab at rugby.
-
The Wooden Transistor :wtf:
(https://www.pnas.org/cms/10.1073/pnas.2218380120/asset/36581df7-47db-4b11-abc2-07d4d2380a44/assets/images/large/pnas.2218380120fig03.jpg)
Source: Electrical current modulation in wood electrochemical transistor
https://www.pnas.org/doi/10.1073/pnas.2218380120 (https://www.pnas.org/doi/10.1073/pnas.2218380120)
-
How Many Legs Are Best?
Curious Archive
https://www.youtube.com/watch?v=lBmtMACELus (https://www.youtube.com/watch?v=lBmtMACELus)
:P
-
Hilariously Inaccurate Medieval Art of Animals
Curious Archive
https://www.youtube.com/watch?v=jnB2Uj7gWSE (https://www.youtube.com/watch?v=jnB2Uj7gWSE)
:palm:
-
Encyclopedia Of A World That Doesn’t Exist | Codex Seraphinianus
Curious Archive
https://www.youtube.com/watch?v=l1FXQMmXYoA (https://www.youtube.com/watch?v=l1FXQMmXYoA)
???
-
The Steam Turbine: The Surprising Relationship of Engineering & Science
engineerguy
https://www.youtube.com/watch?v=-8lXXg8dWHk (https://www.youtube.com/watch?v=-8lXXg8dWHk)
:-+
-
Smith Chart
TheSiGuy
https://www.youtube.com/watch?v=J758TBuQGP8 (https://www.youtube.com/watch?v=J758TBuQGP8)
Every video from this channel is a masterpiece in visualization. :-+
-
Bjt Transconductance and small signal model explained visually
TheSiGuy
https://www.youtube.com/watch?v=Eb1GYdNmj0k (https://www.youtube.com/watch?v=Eb1GYdNmj0k)
^-^
-
Why Lightbulbs Might Be The Best Idea Ever
Veritasium
https://www.youtube.com/watch?v=FU_YFpfDqqA (https://www.youtube.com/watch?v=FU_YFpfDqqA)
:)
-
Euler's Formula Beyond Complex Numbers
Morphocular
https://www.youtube.com/watch?v=Y1gOYtQYRXo (https://www.youtube.com/watch?v=Y1gOYtQYRXo)
:scared: <--- yes, rotations ;D
-
How Kodak Punches 384000 HOLES A MINUTE in Film Stock (Kodak Factory Tour Part 3 of 3) - Smarter Every Day 286
SmarterEveryDay
https://www.youtube.com/watch?v=mrJP82ZZiag (https://www.youtube.com/watch?v=mrJP82ZZiag)
^-^
The other two parts of the factory tour:
How Does Kodak Make Film? (Kodak Factory Tour Part 1 of 3) - Smarter Every Day 271 (https://youtu.be/HQKy1KJpSVc)
How Does Kodak Make Film? (Kodak Factory Tour Part 2 of 3) - Smarter Every Day 275 (https://youtu.be/cAAJUHwh9F4)
-
What is the Riemann Hypothesis REALLY about?
HexagonVideos
https://www.youtube.com/watch?v=e4kOh7qlsM4 (https://www.youtube.com/watch?v=e4kOh7qlsM4)
:D
-
The Fastest Maze-Solving Competition On Earth
Veritasium
https://www.youtube.com/watch?v=ZMQbHMgK2rw (https://www.youtube.com/watch?v=ZMQbHMgK2rw)
:o
-
Radio Antenna Fundamentals Part 1 1947
Gerry Trenwith
https://www.youtube.com/watch?v=JHSPRcRgmOw (https://www.youtube.com/watch?v=JHSPRcRgmOw)
:-+
Radio Antenna Fundamentals - Part 2 1947 (https://youtu.be/EtEBxY8TvuE)
-
The Largest Civilization in The World
ReYOUniverse
https://www.youtube.com/watch?v=rERHPiYxc64 (https://www.youtube.com/watch?v=rERHPiYxc64)
:o
-
A Tesla coil with only three components!
William Fraser
https://www.youtube.com/watch?v=HHsG_dBZyCM (https://www.youtube.com/watch?v=HHsG_dBZyCM)
:D
-
Does that count as a Tesla coil? It doesn't seem to be generating any arcs.
-
Yea, doesn't shoot sparks, maybe in the dark, with a very thin sharpen end loose wire, IDK. :-\
Still cool that it needs an "EMP" to crank-start it, though. ;D
-
This Mysterious Globe Perpetually Spins With No Batteries
The Action Lab
https://www.youtube.com/watch?v=U-NII1RdlcQ (https://www.youtube.com/watch?v=U-NII1RdlcQ)
:o
-
Here's a Question! - Why Does the Water Rise?
Jefferson Lab
https://www.youtube.com/watch?v=hpdnFlU6KqQ (https://www.youtube.com/watch?v=hpdnFlU6KqQ)
???
-
How a Lithium Ion Battery Actually Works // Photorealistic // 16 Month Project
The Limiting Factor
https://www.youtube.com/watch?v=4-1psMHSpKs (https://www.youtube.com/watch?v=4-1psMHSpKs)
:-+
-
An interesting video on the guy who deciphered the Linear B - it is a bit shallow on the details, but there are other videos which dwell on that.
https://youtu.be/9Fn9wVPAYAo
-
Series circuit - 6 LEDs - how does it work?
Henryk Gasperowicz
https://www.youtube.com/watch?v=PD7DzTIFJdU (https://www.youtube.com/watch?v=PD7DzTIFJdU)
;D
-
1941 A DIY Fresnel Lens From Tube
Robert Murray-Smith
https://www.youtube.com/watch?v=SIMxPDa7Hc4 (https://www.youtube.com/watch?v=SIMxPDa7Hc4)
8)
-
Desoldering Made Easy - Amazing Trick || Soldering Tutorial
Mr SolderFix
https://www.youtube.com/watch?v=Vou2xlJkuoU (https://www.youtube.com/watch?v=Vou2xlJkuoU)
:-+
similar approach (bridge all with copper wire and flood with solder before desoldering):
https://www.youtube.com/watch?v=qObbANkrmUM (https://www.youtube.com/watch?v=qObbANkrmUM)
-
Make A Simple Solder Pot From A Soldering Iron 🤔 AMAZING !
Mr SolderFix
https://www.youtube.com/watch?v=FzN2iYXzLlM (https://www.youtube.com/watch?v=FzN2iYXzLlM)
:-+
-
60GHz mmWave Simulation with openEMS & Blender - Radiation Pattern
Sam A
https://www.youtube.com/watch?v=wOR2y7VvlSk (https://www.youtube.com/watch?v=wOR2y7VvlSk)
:o
As seen in https://www.eevblog.com/forum/projects/electromagnetic-simulations-renders-with-openems-blender/ (https://www.eevblog.com/forum/projects/electromagnetic-simulations-renders-with-openems-blender/)
-
Magical Moors - A Mysterious World Full of Life | Free Documentary Nature
Free Documentary - Nature
https://www.youtube.com/watch?v=LxYT7QMT_pA (https://www.youtube.com/watch?v=LxYT7QMT_pA)
^-^
-
Making Infrared Cooling Paint From Grocery Store Items (w/Novel CaCO₃ Microsphere Synthesis)
NightHawkInLight
https://www.youtube.com/watch?v=KDRnEm-B3AI (https://www.youtube.com/watch?v=KDRnEm-B3AI)
8)
-
A Round Disk Through a Smaller Square Hole (Bending Spacetime)
The Action Lab
https://www.youtube.com/watch?v=8jE-ATI8utA (https://www.youtube.com/watch?v=8jE-ATI8utA)
Not spacetime bending but still funny, classic trick of taking advantage of another dimension. ;D
-
Understanding Oscilloscopes – XY Mode
Rohde Schwarz
https://www.youtube.com/watch?v=yFnJAkd0OBg (https://www.youtube.com/watch?v=yFnJAkd0OBg)
Didn't thought about measuring the AM modulation factor like that. ;D
Understanding Oscilloscopes – Lissajous Patterns
Rohde Schwarz
https://www.youtube.com/watch?v=p3qvsSAwmu4 (https://www.youtube.com/watch?v=p3qvsSAwmu4)
-
Avoid These Tiny Bits of Killer Fluff (If You Can)
Journey to the Microcosmos
https://www.youtube.com/watch?v=Rm9K7Awzogg (https://www.youtube.com/watch?v=Rm9K7Awzogg)
:scared:
-
How To Make The Strongest Laser Light
The Action Lab
https://www.youtube.com/watch?v=m_7VTVkhrPU (https://www.youtube.com/watch?v=m_7VTVkhrPU)
:o
-
Series circuit - 6 LEDs - how does it work?
Henryk Gasperowicz
https://www.youtube.com/watch?v=PD7DzTIFJdU (https://www.youtube.com/watch?v=PD7DzTIFJdU)
;D
Can someone explain how this works, or is it a magic trick (illusion)?
-
The video is not faked by special effects. The trick is that inside the connector for the 9V battery, there is a small oscillator, and inside the LEDs and switches there are tiny tuned circuits not visible. The battery connector, the LEDs and/or the switches were modified in advance. Sometimes a simple diode instead of a tuned LC is enough.
There are a few other videos titled "Sollution" on his YouTube channel, where the entire schematic is shown, including the tiny SMD parts hidden inside batt connector and inside LEDs/switches.
https://www.youtube.com/watch?v=mzDTZuFJYX4 (https://www.youtube.com/watch?v=mzDTZuFJYX4)
https://www.youtube.com/watch?v=9f-0lSY5jnU (https://www.youtube.com/watch?v=9f-0lSY5jnU)
-
TSP #230 - A Real-Life Tricorder! Agilent Raman Resolve Through-Barrier Chemical Analyzer
The Signal Path
https://www.youtube.com/watch?v=89_HY1oV_J0 (https://www.youtube.com/watch?v=89_HY1oV_J0)
:o
-
Uniform Plane Waves: A 3D Journey to the Simplest Electromagnetic Wave Propagation
TheSiGuy
https://www.youtube.com/watch?v=zUBXiTkrmSo (https://www.youtube.com/watch?v=zUBXiTkrmSo)
:-+
-
Has JWST shown the Universe is TWICE as old as we think?!
Dr. Becky
https://www.youtube.com/watch?v=aBYgck1zAgQ (https://www.youtube.com/watch?v=aBYgck1zAgQ)
:)
-
The Microspheres Hiding in your Phone's Screen
Breaking Taps
https://www.youtube.com/watch?v=0HZ35CyHVxQ (https://www.youtube.com/watch?v=0HZ35CyHVxQ)
:-DMM
-
The 4 Maxwell Equations. Get the Deepest Intuition!
Universaldenker
https://www.youtube.com/watch?v=hJD8ywGrXks (https://www.youtube.com/watch?v=hJD8ywGrXks)
:-+
-
https://www.youtube.com/watch?v=X9SghCClskI (https://www.youtube.com/watch?v=X9SghCClskI)
-
The Most Reflective Mirror In The World
The Action Lab
https://www.youtube.com/watch?v=JM_lXKmWYDI (https://www.youtube.com/watch?v=JM_lXKmWYDI)
8)
-
I guess the original Tesla was not truly responsible for high voltage AC transmission and transformers.
His name was only mainly pushed by Westinghouse as the all-in-one AC power god he was credited for which later in life he himself began to believe when interviewed.
https://www.youtube.com/watch?v=Q4XVlWqXUTU (https://www.youtube.com/watch?v=Q4XVlWqXUTU)
-
He, he, attribution tales are many:
- Intel's i4004 was not the first microprocessor (https://firstmicroprocessor.com/documents/)
- Wheatstone Bridge was not Wheatstone's (https://en.wikipedia.org/wiki/Wheatstone_bridge)
- E = mc2 was published in physics journals 2 years before being attributed to Einstein (https://www.scientificamerican.com/article/was-einstein-the-first-to-invent-e-mc2/)
- Henry Coanda instead of Hans von Ohain for the first jet engine (https://historyofyesterday.com/henri-coanda-the-real-inventor-of-the-jet-engine/)
- Galileo was not how we think he was (https://intellectualmathematics.com/opinionated-history-of-mathematics/)
etc.
;D
-
From The Institute of Art and Ideas:
"Can we understand the universe? | Sheldrake & Hossenfelder go head to head on dark matter IN FULL"
https://www.youtube.com/watch?v=O8JGlX5eU8g (https://www.youtube.com/watch?v=O8JGlX5eU8g)
Keep an eye on Sabine's bullshit-o-meter. :-DD
-
Tools, Glorious Tools! #11 - The Vacuum Casting Machine
Clickspring
https://www.youtube.com/watch?v=rSLf3MktrvY (https://www.youtube.com/watch?v=rSLf3MktrvY)
^-^
-
What ARE electronic orbitals?
Three Twentysix
https://www.youtube.com/watch?v=23bNW4G9DZk (https://www.youtube.com/watch?v=23bNW4G9DZk)
:-+
-
This Daring Fly Swims in a Shimmering Bubble Shield | Deep Look
Deep Look
https://www.youtube.com/watch?v=T88hBWlxuMQ (https://www.youtube.com/watch?v=T88hBWlxuMQ)
???
-
GET READY!!!
A 555 Chip Walking To Stayin' Alive Synced to Music.
https://www.youtube.com/watch?v=mDhNQPt8An0 (https://www.youtube.com/watch?v=mDhNQPt8An0)
-
Hi BrianHG,
thank you for the video. What a long bread-board.....
Can it do the moon-walk too?
Btw its walking backwards. ;-)
-
Btw its walking backwards. ;-)
:-DD
-
I think Dave will appreciate this most ...
In metric, one milliliter of water occupies one cubic centimeter, weighs one gram, and
requires one calorie of energy to heat up by one degree centigrade—which is 1 percent
of the difference between its freezing point and its boiling point. An amount of hydrogen
weighing the same amount has exactly one mole of atoms in it. Whereas in the American
system, the answer to ‘How much energy does it take to boil a room-temperature gallon
of water?’ is ‘Go fuck yourself,’ because you can’t directly relate any of those quantities.
Cheers,
luudee
-
The Golf Ball Paradox
Steve Mould
https://www.youtube.com/watch?v=5sbM2Isx17A (https://www.youtube.com/watch?v=5sbM2Isx17A)
:o
-
https://www.youtube.com/watch?v=QCX62YJCmGk (https://www.youtube.com/watch?v=QCX62YJCmGk)
New 3b1b, and it's physics related no less!
Even more, 2nd part is already out!
https://www.youtube.com/watch?v=aXRTczANuIs (https://www.youtube.com/watch?v=aXRTczANuIs)
-
Terribly Outdated Technology that we Still Use...
https://www.youtube.com/watch?v=6WOLKaURlCk (https://www.youtube.com/watch?v=6WOLKaURlCk)
-
AI generated commercials / ads. (Give it a few more years and the backgrounds & bodies will be full motion and the voices will be better)
https://www.youtube.com/watch?v=UrW4I6hcvhw (https://www.youtube.com/watch?v=UrW4I6hcvhw)
-
Jonathan Livingston Seagull By Richard Bach
Global Well-Being
https://www.youtube.com/watch?v=ozcsD_3D8Ag (https://www.youtube.com/watch?v=ozcsD_3D8Ag)
^-^
-
https://www.youtube.com/watch?v=N0sI-2bT8eU (https://www.youtube.com/watch?v=N0sI-2bT8eU)
-
Games that Break all the Rules
Curious Archive
https://www.youtube.com/watch?v=clKo8FrWJww (https://www.youtube.com/watch?v=clKo8FrWJww)
:o
-
https://www.youtube.com/watch?v=dCXu8Ju_fdY (https://www.youtube.com/watch?v=dCXu8Ju_fdY)
-
Ball course , Cup and Ball
xofunkox-scientific experiments
https://www.youtube.com/watch?v=Fbgvr5GktMA (https://www.youtube.com/watch?v=Fbgvr5GktMA)
???
-
How GPS Works, And How It Got Better Than The Designers Ever Imagined
Scott Manley
https://www.youtube.com/watch?v=qJ7ZAUjsycY (https://www.youtube.com/watch?v=qJ7ZAUjsycY)
:-DMM
-
For Super Nerds: The Locations of Star Trek and Other Sci-fi in Real Space
https://www.youtube.com/watch?v=tso5pSzBRDo (https://www.youtube.com/watch?v=tso5pSzBRDo)
-
The Profound Meaning of Plato's Allegory of the Cave
After Skool
https://www.youtube.com/watch?v=4nHj3gL_JN0 (https://www.youtube.com/watch?v=4nHj3gL_JN0)
^-^
-
TESLA KNEW The Secret of the Great Pyramid: Unlimited Energy to Power the World
The Why Files
https://www.youtube.com/watch?v=XU49FSIx0_g (https://www.youtube.com/watch?v=XU49FSIx0_g)
:popcorn:
-
Solar storms: more dangerous than you think. Can we survive another Carrington Event?
The Why Files
https://www.youtube.com/watch?v=ftrbdFGTQO4 (https://www.youtube.com/watch?v=ftrbdFGTQO4)
:scared:
-
Halloween month, shoddy-spooky posts and popular at parties allowed! :D
The Moon Revealed: It's a Hollow Spaceship, so who built it and why?
The Why Files
https://www.youtube.com/watch?v=laXhTcko-lg (https://www.youtube.com/watch?v=laXhTcko-lg)
;D
-
Leslie's Cube
xofunkox-scientific experiments
https://www.youtube.com/watch?v=TVu9T74KhVA (https://www.youtube.com/watch?v=TVu9T74KhVA)
:-DMM
-
Ferenc Krausz - Attosecond Physics (VIDEO PORTRAIT)
Max Planck Institute of Quantum Optics
https://www.youtube.com/watch?v=6ZIUJb85BAQ (https://www.youtube.com/watch?v=6ZIUJb85BAQ)
:o
-
A Brief Journey into Attosecond Physics
Tom Douglas-Walker
https://www.youtube.com/watch?v=Xvb6vysV5Pg (https://www.youtube.com/watch?v=Xvb6vysV5Pg)
8)
-
Attosecond Lasers (2023 Nobel Prize in Physics) - Sixty Symbols
Sixty Symbols
https://www.youtube.com/watch?v=NfmSjGbnEWk (https://www.youtube.com/watch?v=NfmSjGbnEWk)
:o
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These TOP 50 HOT tricks will blow your mind!
Mr. Hacker
https://www.youtube.com/watch?v=hJdJHjaaeLE (https://www.youtube.com/watch?v=hJdJHjaaeLE)
;D
-
How an ingenious 400 year old drawing predicted the future
Machine Thinking
https://www.youtube.com/watch?v=KnpSHo6iip4 (https://www.youtube.com/watch?v=KnpSHo6iip4)
:)
-
As a yoof pinball, was were most of my arcade spending went,always realised it was done by the magic of relays but never considered how complex it actually was.Makes some of the industrial control panels ive worked on look like kids play.
https://www.youtube.com/watch?v=ue-1JoJQaEg (https://www.youtube.com/watch?v=ue-1JoJQaEg)
-
Astronomy - Go Woke, Go Broke?
Unzicker's Real Physics
https://www.youtube.com/watch?v=zmZ_Z0ZnefQ (https://www.youtube.com/watch?v=zmZ_Z0ZnefQ)
:-/O
-
Point discharge experiment
xofunkox-scientific experiments
https://www.youtube.com/watch?v=DAlYcQxLJ0I (https://www.youtube.com/watch?v=DAlYcQxLJ0I)
:o
I was expecting the spark at the negative needle. :-\
-
IMO, not a computer chip....
https://www.youtube.com/watch?v=bnAQQEHtoW0 (https://www.youtube.com/watch?v=bnAQQEHtoW0)
-
Hydraulic microphone
xofunkox-scientific experiments
https://www.youtube.com/watch?v=gXAg1SHdPxE (https://www.youtube.com/watch?v=gXAg1SHdPxE)
:D
-
Maxwell's equations are intuitive! (Ep: 1 - Power of Gauss's Law)
FloatHeadPhysics
https://www.youtube.com/watch?v=GQslMfp3Xkw (https://www.youtube.com/watch?v=GQslMfp3Xkw)
Best explanation in the entire Internet! ^-^
-
Inside a Quantum Computer! with Andrea Morello (Part 1 of 2)
EEVdiscover
https://www.youtube.com/watch?v=k_QeSOIDiEM (https://www.youtube.com/watch?v=k_QeSOIDiEM)
:o
-
I made my own Capacitor at CHEMI-CON!
DENKI OTAKU
https://www.youtube.com/watch?v=UQu__pO9bZ0 (https://www.youtube.com/watch?v=UQu__pO9bZ0)
Electrolytic Capacitors: Comprehensive Overview, Teardown, and Experiments
DENKI OTAKU
https://www.youtube.com/watch?v=MAP-VA1m-A4 (https://www.youtube.com/watch?v=MAP-VA1m-A4)
:)
-
Etch Anything, Even Diamond
Breaking Taps
https://www.youtube.com/watch?v=jyUCWq-wCDI (https://www.youtube.com/watch?v=jyUCWq-wCDI)
8)
-
Amazing walnut speaker - DIY Bluetooth speaker by walnut
Penguin DIY
https://www.youtube.com/watch?v=e-igWXH8ZDk (https://www.youtube.com/watch?v=e-igWXH8ZDk)
:D
-
Maxwell's equation explained logically! (Ep 2: Faraday's law powers the world)
FloatHeadPhysics
https://www.youtube.com/watch?v=PF_zNV7zCnU (https://www.youtube.com/watch?v=PF_zNV7zCnU)
:-+
-
Shooting pasta :)
https://youtu.be/RwtXVW0IWEk
-
Test & Measurement Fundamentals
Rohde Schwarz
https://www.youtube.com/playlist?list=PLKxVoO5jUTlvsVtDcqrVn0ybqBVlLj2z8 (https://www.youtube.com/playlist?list=PLKxVoO5jUTlvsVtDcqrVn0ybqBVlLj2z8)
:-+
-
And the award for the best 'nerd-video of the year' goes to...
Project Looking Glass | The Time Warriors of the 2012 Apocalypse
The Why Files
https://www.youtube.com/watch?v=_nGePkIW3Ac (https://www.youtube.com/watch?v=_nGePkIW3Ac)
8)
-
The SAT Question Everyone Got Wrong
Veritasium
https://www.youtube.com/watch?v=FUHkTs-Ipfg (https://www.youtube.com/watch?v=FUHkTs-Ipfg)
;D
-
I Was SCARED To Say This To NASA... (But I said it anyway) - Smarter Every Day 293
SmarterEveryDay
https://www.youtube.com/watch?v=OoJsPvmFixU (https://www.youtube.com/watch?v=OoJsPvmFixU)
:)
-
Watch electricity hit a fork in the road at half a billion frames per second - AlphaPhoenix
https://www.youtube.com/watch?v=2AXv49dDQJw (https://www.youtube.com/watch?v=2AXv49dDQJw)
-
#1700 SMD Fixture for LCR Meter
IMSAI Guy
https://www.youtube.com/watch?v=Wc9aZCIS4vw (https://www.youtube.com/watch?v=Wc9aZCIS4vw)
:-+
-
The Fascinating Geometry of Transistors - Asking an Expert
Dr. Shane Oberloier
https://www.youtube.com/watch?v=JsbIUXoGA28 (https://www.youtube.com/watch?v=JsbIUXoGA28)
:-DMM
-
Giant Vacuum
Buttered Side Down
https://www.youtube.com/watch?v=ZLE9DRnH01o (https://www.youtube.com/watch?v=ZLE9DRnH01o)
:scared:
-
Recreation of Chernobyl inspection robot
https://www.youtube.com/watch?v=X12N5QeTYho (https://www.youtube.com/watch?v=X12N5QeTYho)
-
Microscopic Marvel in your Earbuds
Breaking Taps
https://www.youtube.com/watch?v=wQkrD2D-XFA (https://www.youtube.com/watch?v=wQkrD2D-XFA)
;)
-
Just had this recommended to me and thought it was pretty cool :)
The theory and maths of Quantum computing is waaaaay above my head but I find the subject super interesting none the less and she does a really good job explaining it in layman’s terms :)
https://m.youtube.com/watch?v=tHfGucHtLqo
-
https://www.youtube.com/watch?v=XrlrbfGZo2k (https://www.youtube.com/watch?v=XrlrbfGZo2k)
-
In the spirit of giant 555 timer (https://shop.evilmadscientist.com/productsmenu/652), this guy makes a giant LED:
https://www.youtube.com/watch?v=BZp27KoJyxI (https://www.youtube.com/watch?v=BZp27KoJyxI)
Need to combine the two together and make a giant LED flasher!
-
Light pressure, The mechanical effect of photons
xofunkox-scientific experiments
https://www.youtube.com/watch?v=JJaeKPIcywI (https://www.youtube.com/watch?v=JJaeKPIcywI)
Not a Crookes, not a crook. :-DMM
-
Humans vs Superhumans | When Monsters Were Real and We Almost Went Extinct
The Why Files
https://www.youtube.com/watch?v=juyvnVL6V7g (https://www.youtube.com/watch?v=juyvnVL6V7g)
:scared:
-
UNSW Quantum Computer Lab Visit - Part 2
EEVdiscover
https://www.youtube.com/watch?v=yT0Znr0Et4w (https://www.youtube.com/watch?v=yT0Znr0Et4w)
8)
Inside a Quantum Computer! with Andrea Morello (Part 1 of 2)
EEVdiscover
https://youtu.be/k_QeSOIDiEM (https://youtu.be/k_QeSOIDiEM)
-
Steam engine phone charger
https://www.youtube.com/watch?v=Y2UEY04lKSU (https://www.youtube.com/watch?v=Y2UEY04lKSU)
-
I built my own 16-Bit CPU in Excel
Inkbox
https://www.youtube.com/watch?v=5rg7xvTJ8SU (https://www.youtube.com/watch?v=5rg7xvTJ8SU)
:-+
-
Light pressure, The mechanical effect of photons
xofunkox-scientific experiments
https://www.youtube.com/watch?v=JJaeKPIcywI (https://www.youtube.com/watch?v=JJaeKPIcywI)
Not a Crookes, not a crook. :-DMM
The final laser illumination seems to push that foil way too fast. All you need are a few molecules of air to generate the helping Crooke's effect you get in low air pressure environments. That setup is just too insensitive and doesn't have any true measurement or math to back up what you see as being true sole light radiation pressure. (I guess unless he is using a 100-500 watt laser, that foil is just moving way too fast..)
Now for the real-Mcoy, a video from Cody's Lab. He created a sensitive enough balance scale, calculated the power of the source laser light attaining the predicted force of the light, created a calibration weight (10x that of the light pressure on a mirror surface) to calibrate his balance scale, then measured the light's force VS the calibration weight and found a close enough match that you know what he measured was real:
https://www.youtube.com/watch?v=Ng1X8mPJziA (https://www.youtube.com/watch?v=Ng1X8mPJziA)
-
Clever experiment setup from Cody. :-+
Now I know how to make a super sensitive scale with nothing but passive mechanical elements and a magnet, thanks.
In the Cody's experiment, I would have also aimed at the Al foil through the glass bottle while missing the reflecting/absorbing target, and also made yet another measurement with the mirror tilted 45 degree, in order to check if the point where the laser first hits the glass is heaving any influence or not.
Don't know about the xofunkox's experiment, but he is certainly aware about the possible influence of air molecules. All his videos are without any further explanations and very short, with only 1-2 minutes filming various physics experiments and apparatus, so no surprise that there is no effort to convince others that the experiment was conducted properly.
About the foil acceleration seen in xofunkox's experiment, seems plausible when compared with Cody's experiment, since Cody's instrument was heaving a huge mass to move, when compared with just a thin foil under a high vacuum bell.
-
You've probably heard of SWR standing wave ratio on transmission lines, but what about explosions in tunnels?
https://www.youtube.com/watch?v=oqSJhrRY-Pc (https://www.youtube.com/watch?v=oqSJhrRY-Pc)
-
The Science of SpaceX Starship’s Thermal Tiles
Breaking Taps
https://www.youtube.com/watch?v=SI7mpjHGiFU (https://www.youtube.com/watch?v=SI7mpjHGiFU)
8)
-
https://www.youtube.com/watch?v=BndlxWp65Qo (https://www.youtube.com/watch?v=BndlxWp65Qo)
-
:scared: And now for something completely insane... :scared:
https://www.youtube.com/watch?v=5JfHudxB1fo (https://www.youtube.com/watch?v=5JfHudxB1fo)
-
https://www.youtube.com/watch?v=3EI08o-IGYk (https://www.youtube.com/watch?v=3EI08o-IGYk)
-
https://www.youtube.com/watch?v=e3uk7jU3RHo (https://www.youtube.com/watch?v=e3uk7jU3RHo)
-
WORLD OF TOMORROW by DON HERTZFELDT
don hertzfeldt
https://www.youtube.com/watch?v=4PUIxEWmsvI (https://www.youtube.com/watch?v=4PUIxEWmsvI)
:)
-
FPV quadcopter at 250km/h follows a F1 car around Silverstone.
https://www.youtube.com/watch?v=9pEqyr_uT-k (https://www.youtube.com/watch?v=9pEqyr_uT-k)
-
https://www.youtube.com/watch?v=iT20A4KQxyM (https://www.youtube.com/watch?v=iT20A4KQxyM)
-
Building a wall-hanging sound sculpture | shell-tethered vesper
Eirik Brandal
https://eirikbrandal.com/ (https://eirikbrandal.com/)
https://www.youtube.com/watch?v=R9ZAp6HtYOs (https://www.youtube.com/watch?v=R9ZAp6HtYOs)
^-^
-
Fascinating: https://xairy.io/articles/thinkpad-xdci
-
Can a Little Oil Really Calm the Ocean?
The Action Lab
https://www.youtube.com/watch?v=RST_ylwVrUw (https://www.youtube.com/watch?v=RST_ylwVrUw)
???
-
WTF? :scared:
(Gearless right angle drive)
https://www.youtube.com/watch?v=oz6TUjSE5WU (https://www.youtube.com/watch?v=oz6TUjSE5WU)
https://www.youtube.com/watch?v=5r8RAypUX_c (https://www.youtube.com/watch?v=5r8RAypUX_c)
-
Why is this number everywhere?
Veritasium
https://www.youtube.com/watch?v=d6iQrh2TK98 (https://www.youtube.com/watch?v=d6iQrh2TK98)
42 ;D
-
But what is a GPT? Visual intro to Transformers | Deep learning, chapter 5
3Blue1Brown
https://www.youtube.com/watch?v=wjZofJX0v4M (https://www.youtube.com/watch?v=wjZofJX0v4M)
:-/O
Neural Networks (playlist, all chapters)
3Blue1Brown
https://www.youtube.com/playlist?list=PLZHQObOWTQDNU6R1_67000Dx_ZCJB-3pi (https://www.youtube.com/playlist?list=PLZHQObOWTQDNU6R1_67000Dx_ZCJB-3pi)
-
2252 - Mushroom Power - How To Turn A Mushroom Into A Supercapacitor
Robert Murray-Smith
https://www.youtube.com/watch?v=yEJlqNpa1UY (https://www.youtube.com/watch?v=yEJlqNpa1UY)
8)
-
The wonder material. Just take care to never breath it in...
https://www.youtube.com/watch?v=IXHlQyUecM8 (https://www.youtube.com/watch?v=IXHlQyUecM8)
-
Asbestos - The Evil Dust
STORMConsultancy
https://www.youtube.com/watch?v=ihgCi2k7M04 (https://www.youtube.com/watch?v=ihgCi2k7M04)
:scared:
Later edit:
At minute 17:35 the video mentions that the first 40 floors of the former WTC skyscrapers were sprayed with asbestos floor insulation, then the industry regulation laws against spraying construction walls with asbestos come up, and they stopped spraying asbestos for the rest of the WTC floors (however, other non-sprayed asbestos materials were banned only decades later) https://youtu.be/ihgCi2k7M04?t=1055 (https://youtu.be/ihgCi2k7M04?t=1055)
-
A 2-Axis, Multihead Light Positioner
bunnie:studios
(bunnie's blog) (https://www.bunniestudios.com/blog/2024/a-2-axis-multihead-light-positioner/)
...
And below is a video of a region of a chip being imaged while the azimuth of the light is continuously varied:
https://bunniefoo.com/iris/2024/gf180-5x-psi_small.mp4 (https://bunniefoo.com/iris/2024/gf180-5x-psi_small.mp4)
Looking at a chip die using infrared, and without decapping the chip?! :o
-
Not without decapping -- these are bare-die parts, of course. Usually CSPs, but many CPUs are included, which seems to be what they're looking at here. They're also flip-chips, so the substrate is what's presented, allowing long enough wave IR to peer into the active region, the transistors themselves -- well, not really, the wavelength spans dozens of actual transistors on today's finest pitch processes, but the reflection still depends upon the density and pattern of transistors, trenching and doping, so you get that.
The pros use it, plus direct emissions, to investigate their own chips -- malfunctions can emit light (unintended minority-carrier hijinx) or even locally heat up (thermal emission), greatly reducing exploration time on the SEM, let alone cutting (FIB), sectioning and TEM. Or other tweaks; maybe you can hit parts with light of suitable wavelengths and cause effects -- kind of the microelectronic analog to hot and cold spray when testing ye olde discrete circuits.
Tim
-
Found the paper, the technique is "in-situ", but it's for wafer-level chip scale packaging (WL-CSP) (https://en.wikipedia.org/wiki/Wafer-level_packaging).
https://arxiv.org/ftp/arxiv/papers/2303/2303.07406.pdf (https://arxiv.org/ftp/arxiv/papers/2303/2303.07406.pdf)
https://www.bunniestudios.com/blog/2023/infra-red-in-situ-iris-inspection-of-silicon/ (https://www.bunniestudios.com/blog/2023/infra-red-in-situ-iris-inspection-of-silicon/)
-
Killer Patents & Secret Science Vol. 1 | Free Energy & Anti-Gravity Cover-Ups
The Why Files
https://www.youtube.com/watch?v=-ZRwlYtAMps (https://www.youtube.com/watch?v=-ZRwlYtAMps)
;D
-
Ain't No Twin Primes (live) | Bill Withers parody by Acapella Science and 3Blue1Brown
Grant Sanderson
https://www.youtube.com/watch?v=djzKCZHeVjY (https://www.youtube.com/watch?v=djzKCZHeVjY)
^-^