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.

Erscheinungsdatum
1931-04-30
TMDB
2.0 / 10 (1)
Laufzeit
11 Min.
Genres
Animation
Regie
村田安司

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