Electrical Telegraphy, Electric Bells and Telephones (1931)

Originaltitel: 電信 電鈴 電話

Længde: 11 minutter

• Instruktion: Yasuji Murata
• Manuskript:
• Fotografi:
• Musik:

Streaming-leverandør: 🖕

Links: TMDb IMDb

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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.

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