ELECTRIC EYES.
WIRELESS’S LATEST MARVEL. It would appear that wireless will soon add to its marvels by enabling us to see by it. There has been evolved a photoelectric cell which is so sensitive to light that it can "see” even the glimmer of a candle burning at a distance of three miles! Even such a glimmer can, through it, set in motion a huge machine. A new and very sensitive form of these "electric eyes” has enabled a scientist to demonstrate how a very simple object, such as a hand or the outlines of a human face, can be seen at a distance by television. With another type of celt another has succeeded in making photographs of sound taken on a kinematograph ftilin reroduce speech and music in exact time with the movements portrayed in the picture. „ , , , By means of "electric eyes, the first glimpse of dawn can be harnessed to extinguish the lights of an automatic buoy at sea; and the first glare from an outbreak of fire can be made to start a warning siren or other alarm.
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Bibliographic details
Northland Age, Volume 25, Issue 31, 20 November 1925, Page 6
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181ELECTRIC EYES. Northland Age, Volume 25, Issue 31, 20 November 1925, Page 6
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