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Wireless telephone![]() John Logie Baird ![]() ![]() SEEING BY WIRELESS. CELL THAT ACTS LIKE A MICROPHONE. A young electrical engineer, Mr John L Baird, an associate of the Royal Technical College, Glasgow, claims to have solved the problem of seeing by wireless or telephone. Yesterday he gave a demonstration in his laboratory in Frith Street, Soho, W1.
For the purpose of yesterday's demonstration, people placed their heads in a frame, on which beat the rays of powerful electric lamps, and at the same moment their portraits were reproduced on a screen some distance away. Although by no means perfect, owing, it was stated, to the imperfect apparatus, the portraits were recognisable and every movement of the features could be distinguished. A similar experiment was conducted between two rooms, showing that the portrait was flashed across wires and not reproduced by reflection. Mr. Baird, speaking of his "televisor," said: "To reproduce an open-air scene an apparatus similar to a kinema camera would be used. The lens of the camera focuses the lights and shades of the scene on a light sensitive cell. That cell performs the function of a microphone in wireless broadcasting and sends the lights and shades over telephone or wireless waves for reproduction on a ground-glass screen attached to a telephone or wireless receiving set.". ![]() ![]() |