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.

Director: Yasuji Murata

Audience-only score — full critic data not yet in the ReelXO vault.