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which were developed in the 1950s. At
Westinghouse Corp's "Powercasting" exhibit of futuristic shortwave technology, sandwiches were cooked by placing them between metal plates of a powerful 10 kW 60 MHz
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magazine would have the copyright renewed in 1961. Online page scans of the
Catalog of Copyright Entries, published by the US Copyright Office can be found
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Actress Fifi D'Orsay assists engineer G. R. Severance in a demonstration of his new method of "cooking by short waves" at the 1933 Chicago World's Fair
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magazine, Popular Book Corp., New York, Vol. 4, No. 7, November 1933, p. 394
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Click on a date/time to view the file as it appeared at that time.
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Cooking with radio waves - Chicago Worlds Fair 1933.jpg
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Cooking_with_radio_waves_-_Chicago_Worlds_Fair_1933.jpg
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