Electrical Telegraphy, Electric Bells and Telephones Backdrop Blur
Electrical Telegraphy, Electric Bells and Telephones Poster
2.0 0h 11m

Electrical Telegraphy, Electric Bells and Telephones

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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Overview

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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