不思議な反復運動装置
7:16
A message to future scientists #19: Halbach array
4:46
毛の太さをレーザーポインタで測る！
17:35
How a quartz watch works - its heart beats 32,768 times a second
19:02
Surprising Effect of Dirt on Climbing Ropes
4:36
An easy enough and interesting rust prevention experiment!
14:34
Bizarre traveling flame discovery
3:44
液晶ディスプレーと糖分の深～い関係
30:03