La paradoja de los resortes
24:43
The Lever Paradox
14:34
Bizarre travelling flame discovery
20:50
This Rod Fountain Finally Proves Me Right
18:03
This weird metal is insanely bouncy
16:30
I Made A Water Computer And It Actually Works
17:35
How a quartz watch works - its heart beats 32,768 times a second
9:26
You can't hide the batteries when it's transparent!
21:37