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CIDE DICTIONARY
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telegraphoscope

CIDE DICTIONARY

telegraphoscopen. [Gr. th^le far + -graph + -scope.].
     An instrument for telegraphically transmitting a picture and reproducing its image as a positive or negative. The transmitter includes a camera obscura and a row of minute selenium cells. The receiver includes an oscillograph, relay, equilibrator, and an induction coil the sparks from which perforate a paper with tiny holes that form the image. It is now (1999) obsolete, having been replaced by telefax and internet transmission of images.  [Webster 1913 Suppl.]
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