Spot News

Duration: 0:09:00

Format: 16mm

Color: B&W

Sound: sound

Description: Dramatization of how photographs are transmitted by wire, an exciting new technology in the 1930s., Demonstrates the principles of wire-photo transmission. Shows an actual photograph being scanned by a photoelectric eye into lines which are transmitted as an electric current of varying density. Ends by showing how the current is received at the newspaper office, changed back to light values, and printed as a picture.

Complete Record: Dramatization of how photographs are transmitted by wire, an exciting new technology in the 1930s., NOTE: Two (or more) records have been merged together to create this data.

Online Copy: https://www.youtube.com/watch?v=4fm48__Xk3c

Metadata Source:YouTube

2 users have this film:
Indiana University Library Moving Image Archive, Prelinger Archives

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Original permalink · Record added: 2023-02-28 14:45:11