| slovo | definícia |
Telegraphoscope
(gcide) | Telegraphoscope \Tel`e*graph"o*scope\, n. [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now (1999) obsolete, having been replaced by telefax and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. +PJC] |
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