We should use this amazing mechanism that's inside a grasshopper leg
12:47
Watch gravity pull two metal balls together
17:35
How a quartz watch works - its heart beats 32,768 times a second
13:42
This Car Travels Farther Than You Push It
19:22
Mechanical circuits: electronics without electricity
18:05
Light sucking flames look like magic
10:21
2D water magic
14:40
More Bizarre Attempts at Perpetual Motion Machines
12:05