Electrical Telegraphy, Electric Bells and Telephones
1931-04-30
.11 min
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.
Storyline
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.
Released
1931-04-30
Runtime
11 min
Budget
$0
Revenue
$0
Language
Unknown
Status
Released
Genre
Production
Unknown
Directors
CASTS
GOMOVIEINFO
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