Unsichtbare Brücken
Movie
1932-08-18
40m
Documentary
In the broadcasting center of a radio station, visitors are informed in a kind of educational course about how "electric waves" are generated and how they are converted into sounds that can then be heard on the radio.
Status
Released
Released
1932-08-18
Runtime
40m
Studio
Country
Germany
Language
German
Links
Director
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