Word: orthicon
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Dates: during 1945-1945
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...pretty girls on a stage being televised by old-style equipment under glaring lights. When some of the lights were switched out, the girls faded off the television screen set up in front of the audience. The old camera could not see them. Then R.C.A.'s new "image orthicon" pickup tube went into action, and the girls reappeared on the screen, brighter than ever...
...girls still smiled self-consciously from the screen. At last, in the flattering light of a single candle, the girls on the stage looked lovely but dim. Their televised images on the screen were as bright as if seen in a well-lit room. The image orthicon, 100 times as sensitive as earlier tubes, had actually amplified the light reflected from their faces...
...most startling-and corniest-stunt came last. With the studio in pitch darkness, the television screen showed a radio announcer making stagy passes at one of the girls. From a balcony, an infrared projector was shooting "black light" on the stage; the all-seeing image orthicon (sensitive to infra red) was spying on the couple...