Page:Popular Mechanics 1928 11.pdf/50

 



HE PROBLEM of perfect television has been brought a stage nearer solution by the recently successful tests of two devices invented by John L. Baird, English expert. Mr. Baird has succeeded in transmitting by his radio televisor in daylight, with the sun hidden by clouds, the images of the head and shoulders of a man, whose living picture appeared clearly on a screen in the interior of a darkened room. He next attacked the problem of transmitting by radio television the living pictures of objects in their natural colors. In this successful transmission, the receiver showed a small image about as large as a visiting card, but in perfect detail. For radio-television in this process, the English inventor uses a three-color device, in which the three primary shades of blue, red and green are made to transmit successive images of a live or still object. In rapid succession, a green, a blue and a red 