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.
Release Date
April 30, 1931Runtime
11 minGenres
AnimationDirected by
Yasuji MurataLanguage
JapaneseBudget
$0Revenue
$0Status
Released