Interesting:

Six weeks lasts exactly 10! seconds.

Interesting:

Over 100 billion neutrinos pass unnoticed through your head every second!

World of Engineering Quiz:

You are shown 2 cylinders – one is made of gold and hollow, the other one is made of alloy and solid. Both have the same weight, shape, and are colored in black. How can you figure out which cylinder is the golden one, without scratching the paint?

Nuclear Generation
https://youtu.be/VB4rTjIp9gw

Math puzzle.

* On the left side the square rests on a square with side 1.5, and on the right side on three squares of sides 1, 2, 3. The top square’s top left corner is coincident with the tilted square’s corner, and the squares of sides 2 and 3 are aligned on the right side.

Mechanical reasoning test. How much force do you need to balance the lever?

The Seiko TV watch, 1982. Pretty amazing tech for its days.

Nikola Tesla sitting in his laboratory with his "magnifying transmitter."

When you transport something by CAR it is called SHIPment and when you transport something by SHIP it is called CARgo.

“The important thing is to never stop questioning [or learning].”
– Albert Einstein

Hello people, can you check for errors?

New video is up! Lightness perception illusions
https://youtu.be/zhv9u5nPbNk

Here's a useful info for you guys: one 18 inch pizza has more 'pizza' than two 12 inch pizzas.

Area of two 12" pizzas:

12/2 = 6 6×6=36 36xπ = 113.1 in² x 2 = 226.2 in²

Area of one 18" pizza:

18/2=9 9×9=81 81xπ = 254.5 in²

Laser rust removal

Model T 'Elevator Garage', Chicago 1936.

Perfection