Author Topic: Fun for nerds  (Read 171535 times)

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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #600 on: April 03, 2024, 05:37:45 pm »
2252 - Mushroom Power - How To Turn A Mushroom Into A Supercapacitor
Robert Murray-Smith



 8)

Offline BrianHG

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Re: Fun for nerds
« Reply #601 on: April 08, 2024, 03:39:13 am »
The wonder material.  Just take care to never breath it in...
 
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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #602 on: April 08, 2024, 05:53:14 am »
Asbestos - The Evil Dust
STORMConsultancy



 :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
« Last Edit: April 08, 2024, 06:11:47 am by RoGeorge »
 

Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #603 on: April 11, 2024, 08:26:44 am »
A 2-Axis, Multihead Light Positioner
bunnie:studios
(bunnie's blog)

Quote
...
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

Looking at a chip die using infrared, and without decapping the chip?!  :o

Offline T3sl4co1l

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Re: Fun for nerds
« Reply #604 on: April 11, 2024, 05:02:35 pm »
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
Seven Transistor Labs, LLC
Electronic design, from concept to prototype.
Bringing a project to life?  Send me a message!
 
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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #605 on: April 11, 2024, 05:53:33 pm »
« Last Edit: April 11, 2024, 05:55:21 pm by RoGeorge »
 
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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #606 on: April 20, 2024, 07:27:48 pm »
Killer Patents & Secret Science Vol. 1 | Free Energy & Anti-Gravity Cover-Ups
The Why Files



 ;D

Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #607 on: April 22, 2024, 03:45:16 am »
Ain't No Twin Primes (live) | Bill Withers parody by Acapella Science and 3Blue1Brown
Grant Sanderson



 ^-^

Online Sal Ammoniac

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Re: Fun for nerds
« Reply #608 on: April 25, 2024, 06:48:23 pm »
"That's not even wrong" -- Wolfgang Pauli
 
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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #609 on: April 30, 2024, 05:39:36 am »
This Is A New Rocket - Smarter Every Day 297
SmarterEveryDay



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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #610 on: May 03, 2024, 07:33:50 am »
I almost made a camera sensor.
Breaking Taps



 :o

Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #611 on: May 16, 2024, 08:50:52 am »
Emulating biology to make tiny robots
Breaking Taps



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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #612 on: May 20, 2024, 03:18:40 pm »
The Map of Topological Quantum Computing - a NEW Kind of Quantum Computer
Domain of Science



 :)

Offline BrianHG

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Re: Fun for nerds
« Reply #613 on: May 21, 2024, 05:30:12 pm »
The Engineering of Duct Tape

 

Online Sal Ammoniac

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Re: Fun for nerds
« Reply #614 on: May 21, 2024, 07:09:49 pm »
"That's not even wrong" -- Wolfgang Pauli
 
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Offline BrianHG

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Re: Fun for nerds
« Reply #615 on: May 23, 2024, 01:39:14 am »
 

Online Sal Ammoniac

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Re: Fun for nerds
« Reply #616 on: May 23, 2024, 07:04:36 pm »
The elements song by Tom Lehrer:
"That's not even wrong" -- Wolfgang Pauli
 
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Offline NiHaoMike

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Re: Fun for nerds
« Reply #617 on: May 23, 2024, 10:11:25 pm »
Cryptocurrency has taught me to love math and at the same time be baffled by it.

Cryptocurrency lesson 0: Altcoins and Bitcoin are not the same thing.
 
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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #618 on: May 25, 2024, 05:00:11 am »
Can a Boat Float In Supercritical Fluid?
The Action Lab



 :o

Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #619 on: June 07, 2024, 05:26:51 am »
From the Circle to Epicycles (Part 1) - An animated introduction to Fourier Series
https://www.andreinc.net/2024/04/24/from-the-circle-to-epicycles#epicycles-a-flower

 ^-^

Whiteboard Web    
SDR ยป I/Q Data for Dummies
http://whiteboard.ping.se/SDR/IQ

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« Last Edit: June 07, 2024, 06:21:21 am by RoGeorge »
 

Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #620 on: June 08, 2024, 06:44:38 am »
How does LIGO detect gravitational waves?
Craig Cahillane



 :-DMM
 
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Offline soldar

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Re: Fun for nerds
« Reply #621 on: June 13, 2024, 10:08:08 am »
Why the USA Drops 14.7 Million Worms On Panama Every Week




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Offline RoGeorgeTopic starter

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Re: Fun for nerds
« Reply #622 on: June 13, 2024, 05:50:07 pm »
Micronics SLS nylon 3D printer makes electronic circuits
Applied Science



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Offline soldar

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Re: Fun for nerds
« Reply #623 on: June 14, 2024, 09:30:06 am »
Transmission lines.

The Story of the Telegrapher's Equations - from diffusion to a wave.


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Offline soldar

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Re: Fun for nerds
« Reply #624 on: June 14, 2024, 06:55:45 pm »
This video by Grady Hillhouse from the Practical Engineering channel has an interesting explanation of the way electric power companies handle reactive power. The first ten minutes is just explaining the basics of reactive power and you can skip that part if you are already familiar with that. It talks about how geomagnetic storms affect the power grid



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