TELEGRAPH MOVING PICTURES

Grey River Argus, 23 November 1910, Page 2

TELEGRAPH MOVING PICTURES

Sending photographs over telephon or telegraph . wires has not yet reached a thoroughly practical stage, but a French inventor has made an, apparatus by which it may become possible to telegraph a series of photographs one after the other instantaneously, so as to give a moving picture reproduction of an event at any distance away. The method is very interesting. An . ordinary half-tone newspaper illustration . .if examined cW ely, is seen to consist of miuimerabl© dots of . vrious size which com- ' b'-ne to form the " picture with 'its , lights, and shades. -The sending records consist of innumerble perforations in a sheet of paper, each hole, corresponding to the dots of a halftone photograph. The perforated pa-, per record or perfoxmation photgraph is laid on a metal base aiid drawn •along under a set of nietal brushes. The \yider.the hole, the more contact ;there is between the brush and metal underneath. By this ..means the amount of electric current sent to the distant viewing screen is varied. The currents of various strengths are made to illuminate more or less, strongly small portions of the viewing screen, each of which corresponds to a. perforation in ; the . picture transmitted.