Unsichtbare Brücken
de
PG-13
August 1932
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.
Runtime:
40 minutes
Status:
Released
Original Language:
de
Budget:
N/A
Revenue:
N/A
Director:
Hans Fritz Wilhelm