Denshin Denrei Denwa
English name: Electrical Telegraphy, Electric Bells and Telephones
Type: Movie, Episodes: 1
Aired: 1931
Source: Original
Rating: G - All Ages
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.