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Content: 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.

Countries:

Japan

Genres:

Animation

Runtime:

11 minutes

Year:

1931

Directors:

Yasuji Murata

Actors:

Crews:

Director