電信 電鈴 電話

電信 電鈴 電話 (1931)

When copper wire is wrapped around an iron rod and connected to a battery, it becomes an electromagnet. A science teaching material movie that explains the principle and structure of electric bells and telephones by applying the principle of an electromagnet through a fusion of live action and animation.

Data de estreia
1931-04-30
TMDB
2.0 / 10 (1)
Duração
11 min
Géneros
Animação
Realizador
村田安司

Recomendados