Category:Telegraphoscope

Tel`e*graph"o*scope, n. [gr. th e far + -graph + -scope.]

Defn: 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, ralay, equilibrator, and an Induction coil the sparks from which perforate a paper with tiny Holes that form the image.