Friday, December 07, 2012

How Sound Is Transmitted...


This is a nice 6-minute science reel on how radio works. Unfortunately the video lacks any context so it's origin is unknown. It is in the Prelinger Archives on archive.org, which is likely how it came to be preserved at all. The Prelinger Archives were founded in 1983 by Rick Prelinger in New York City. It is a a broad collection of over 60,000 ephemeral films in various formats. In 2002 it was acquired by the Library of Congress.




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