遊びの科学/science of play
8:20
音の振動/Sound Vibration
25:41
I made the SHARPEST Sword with wood, Goujian from 2500 years ago, same technic used by Liziqi
8:20
音楽の科学①/The Science of Music
8:20
The Science behind Flying Discs / Mr. Denjiro's Happy Energy! #769
8:08
科学マジック/science magic
8:20
コレの仕組み/How this works
8:21
身体のしくみ①/The science of health
16:51