Author Topic: Fun for nerds  (Read 33510 times)

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Online Ed.Kloonk

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Re: Fun for nerds
« Reply #225 on: June 02, 2021, 03:39:51 pm »
What ever you do, don't show Elon that!
 

Online RoGeorge

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Re: Fun for nerds
« Reply #226 on: June 05, 2021, 04:20:22 pm »


 ???

Online RoGeorge

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Re: Fun for nerds
« Reply #227 on: June 18, 2021, 03:40:03 pm »
Quote
"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

Online RoGeorge

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Online BU508A

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Re: Fun for nerds
« Reply #229 on: June 24, 2021, 01:59:01 pm »
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/
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 

Online RoGeorge

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Re: Fun for nerds
« Reply #230 on: June 24, 2021, 07:08:57 pm »


 :o

Online RoGeorge

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Re: Fun for nerds
« Reply #231 on: June 25, 2021, 08:46:14 pm »
m-Widar, like a RADAR, but uses many Tx points, sparsity, random patterns, correlation and a post processing technique called transient rendering.  Can see you behind walls or indoors at 300+ kiloFPS!  :o

Quote
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

Online RoGeorge

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Re: Fun for nerds
« Reply #232 on: June 30, 2021, 03:40:35 pm »
Reactive Ion Etching (RIE) for better homemade computer chips   8)


Source:  https://hackaday.com/2021/06/29/garage-semiconductor-fab-gets-reactive-ion-etching-upgrade/
« Last Edit: June 30, 2021, 03:42:53 pm by RoGeorge »
 
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Offline T3sl4co1l

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Re: Fun for nerds
« Reply #233 on: July 02, 2021, 06:58:50 am »
Damn fine (up and coming?) science channel:

https://www.youtube.com/c/AlphaPhoenixChannel/videos

YT being what it is, I'm shocked I haven't seen this sooner; alas!

Tim
Seven Transistor Labs, LLC
Electronic design, from concept to prototype.
Bringing a project to life?  Send me a message!
 
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Online RoGeorge

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Re: Fun for nerds
« Reply #234 on: July 04, 2021, 09:18:32 am »


Gold!   :-+
 
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Online BU508A

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Re: Fun for nerds
« Reply #235 on: July 12, 2021, 11:38:48 am »
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
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 

Online RoGeorge

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Re: Fun for nerds
« Reply #236 on: July 12, 2021, 12:16:52 pm »
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. 

Online RoGeorge

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Re: Fun for nerds
« Reply #237 on: July 18, 2021, 03:37:44 pm »
The Story of Shor's Algorithm, Straight From the Source | Peter Shor   :popcorn:



Online RoGeorge

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Re: Fun for nerds
« Reply #238 on: July 21, 2021, 08:45:17 pm »
Heat conduction in crystals
xofunkox-scientific experiments



Fourier would have loved that   ;D

Online RoGeorge

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Re: Fun for nerds
« Reply #239 on: July 22, 2021, 04:32:45 pm »
Operational Amplifier with Switchable Gain
All Electronics Channel



 :-+

Online RoGeorge

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Re: Fun for nerds
« Reply #240 on: July 23, 2021, 07:55:20 am »
I Invented a New Material: Hydrophobic Slime
The Action Lab



 ???


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