Electrical Telegraphy, Electric Bells and Telephones

1 EP/1 Jan 1931

Oshimeter

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Synopsis

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.

Episode Guide

Oshimeter0-5960-7980-100
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