ゴムは面白い/Rubber is interesting
8:20
科学クッキング/science cooking
8:20
刃物の歴史/History of Cutlery
21:10
I made a (3+3+3+3)+3 axis tourbillon
16:07
The process of making seals whose prints float and disappear! Amazing factory in Japan!
8:20
ジャイロ/Gyro
15:35
Will this toy engine work at full size? (yes)
14:45
【超立方体】四次元を可視化した図形がヤバすぎる【ゆっくり解説】
8:20