INVISIBLE LIGHT RAYS
GUARD AGAINST BURGLARS SYDNEY, Dec. 6. The use of the invisible light ray has been developed by a Sydney engineer, Mr O. C. Turner, who claims that he has made advances beyond anything elsewhere in the world. The system of interruption of the ray whereby a shutter is closed or an alarm sounded, he said at a demonstration, had been developed to such a degree of sensitivity that it was possible to use many mirrors in the light beam and reflect it at any desired angle. One of the developments he has patented, called the color-meter, enables colors to be exactly matched. A firm of jewellers, which has suffered more than once 'from raids, has the interrupted ray in use, so that on a window being .broken a shutter will descend in a fraction of a second.
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Bibliographic details
Poverty Bay Herald, Volume LXI, Issue 18582, 17 December 1934, Page 12
Word Count
140INVISIBLE LIGHT RAYS Poverty Bay Herald, Volume LXI, Issue 18582, 17 December 1934, Page 12
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