PICTURES BY WIRELESS

Waipa Post, Volume 32, Issue 1787, 27 July 1926, Page 6

PICTURES BY WIRELESS

IMPRESSIONS THROUGH THE NIGHT. , Flashing through the night, electric impulse!? which -carry photographic impression have been shot over the Pacific in new efforts to harnes science to practical ends (says the Montreal Witness). The Radio Corporation of America, reversing previous tests, attempted to send news pictures from New York to Honolulu, relaying them from a high-powered Alexanderson alternator at the firm's 200 kilowatt station in San Francisco. Pictures have been sent from Honolulu to the United States on two occasions, first when the United States fleet was operating in Hawaiian waters and again when Commander John Rodgers and his crew of the seaplane PN 9-1 were saved after their dramatic voyage. The Rodgers photographs came through fairly successfully, hut radio officials feel that better results can be obtained, and arranged this new test. A. J. Koenig, photo-radio engineer, was sent from New York to 'Honolulu to handle the reception, and R. E. Mathes was the engineer in charge of the experiment at San Francisco. Pictures are sent through the air in much the same way as by closed circuit telegraph or telephone wires. An intense light is directed to a glass cylinder, containing the film. A ham-

mer device, registering on a photoelectric cell, is controlled by the light as it passed through the film. The light and dark places cause different motions, and the device records these currents which are then amplified and sent into the air. The receiving sta- 4 tion reverses the process, and the light and dark spaces of the original photographs are recorded.