Word: krypto
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Dates: during 1920-1929
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Smoke Photography. Aerial photographers at McCook Field, Ohio, gave full credit to the Eastman Kodak Co. for new "K-panchromatic" plates by which flying observers can photograph the earth through smoke screens and light fog. The plates are treated with a secret cyanide, "krypto-cyanide," sensitive to infra-red rays which, though invisible to the eye, penetrate smoke and water vapor to record an image in the camera. The significance: protection for wartime mapmakers...
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