Electrical Telegraphy, Electric Bells and Telephones

Electrical Telegraphy, Electric Bells and Telephones (1931)

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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.

Date of release
1931-04-30
TMDB
2.0 / 10 (1)
Runtime
11m
Genres
Animation
Director
Yasuji Murata

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