Fun for nerds

[RoGeorge]

How a Lithium Ion Battery Actually Works // Photorealistic // 16 Month Project
The Limiting Factor



 

[quadtech]

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

[RoGeorge]

Series circuit - 6 LEDs - how does it work?
Henryk Gasperowicz



 

[RoGeorge]

1941 A DIY Fresnel Lens From Tube
Robert Murray-Smith



 

[RoGeorge]

Desoldering Made Easy - Amazing Trick || Soldering Tutorial
Mr SolderFix



 

similar approach (bridge all with copper wire and flood with solder before desoldering):

[RoGeorge]

Make A Simple Solder Pot From A Soldering Iron 🤔 AMAZING !
Mr SolderFix



 

[RoGeorge]

60GHz mmWave Simulation with openEMS & Blender - Radiation Pattern
Sam A



 

As seen in https://www.eevblog.com/forum/projects/electromagnetic-simulations-renders-with-openems-blender/

[RoGeorge]

Magical Moors - A Mysterious World Full of Life | Free Documentary Nature
Free Documentary - Nature



 

[RoGeorge]

Making Infrared Cooling Paint From Grocery Store Items (w/Novel CaCO₃ Microsphere Synthesis)
NightHawkInLight



 

[RoGeorge]

A Round Disk Through a Smaller Square Hole (Bending Spacetime)
The Action Lab



Not spacetime bending but still funny, classic trick of taking advantage of another dimension. 

[RoGeorge]

Understanding Oscilloscopes – XY Mode
Rohde Schwarz



Didn't thought about measuring the AM modulation factor like that. 

Understanding Oscilloscopes – Lissajous Patterns
Rohde Schwarz

[RoGeorge]

Avoid These Tiny Bits of Killer Fluff (If You Can)
Journey to the Microcosmos



 

[RoGeorge]

How To Make The Strongest Laser Light
The Action Lab



 

[jeffjmr]

Series circuit - 6 LEDs - how does it work?
Henryk Gasperowicz



 

Can someone explain how this works, or is it a magic trick (illusion)?

[RoGeorge]

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.

[RoGeorge]

TSP #230 - A Real-Life Tricorder! Agilent Raman Resolve Through-Barrier Chemical Analyzer
The Signal Path



 

[RoGeorge]

Uniform Plane Waves: A 3D Journey to the Simplest Electromagnetic Wave Propagation
TheSiGuy



 

[RoGeorge]

Has JWST shown the Universe is TWICE as old as we think?!
Dr. Becky



 

[RoGeorge]

The Microspheres Hiding in your Phone's Screen
Breaking Taps



 

[RoGeorge]

The 4 Maxwell Equations. Get the Deepest Intuition!
Universaldenker



 

[NiHaoMike]

[RoGeorge]

The Most Reflective Mirror In The World
The Action Lab



 

[BrianHG]

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.

[RoGeorge]

He, he, attribution tales are many:
    - Intel's i4004 was not the first microprocessor
    - Wheatstone Bridge was not Wheatstone's
    - E = mc² was published in physics journals 2 years before being attributed to Einstein
    - Henry Coanda instead of Hans von Ohain for the first jet engine
    - Galileo was not how we think he was
etc.

 

[BU508A]

From The Institute of Art and Ideas:
"Can we understand the universe? | Sheldrake & Hossenfelder go head to head on dark matter IN FULL"



Keep an eye on Sabine's bullshit-o-meter.