Electrical Telegraphy, Electric Bells and Telephones

N/A

1931

Animation

11 minutes

Summary

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.

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Original Name電信 電鈴 電話 (Electrical Telegraphy, Electric Bells and Telephones)

StatusReleased: 94 years ago
April 30, 1931

LanguageUnknown

Spoken LanguagesUnknown

Budget-

Revenue-

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