Optical recording and playback
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Posted by Amorette Allison (+11808) 6 years ago
Guess the year this came from:

Make and play your own records from a beam of light in a combination radio phonograph record-making machine are the big features of the Philco line which Eustace Vynne introduced at the meeting of Philco dealers at the Met Cafe banquet room sponsored by Farm and Home Appliance. “We take the sound off the record with a floating jewel and a photoelectric cell through a beam of light,” Vynee explained.
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Posted by David Schott (+17178) 6 years ago
1940?



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Posted by Amorette Allison (+11808) 6 years ago
AN A+ for young Mr. Schott! Steve and were discussing if it went away because it was used in the war effort and they wanted to keep it secret or if the quality was terrible.
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