12:47

Watch gravity pull two metal balls together

13:56

How petrol pumps know when to turn themselves off

28:32

Six questionably legal pencil sharpeners

19:48

Why Are Cooling Towers Shaped Like That?

13:06

HUGE Magnet VS Copper Sphere - Defying Gravity- Will a Neodymium Magnet Float Inside?

15:09

Electromagnetic Aircraft Launcher

16:57

I Built the World's Biggest Hydrofoil Board

19:19

We should use this amazing mechanism that's inside a grasshopper leg