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Like many of the most important creations of history, the radar was an invention developed in a war context to provide some military advantage. Specifically, it was in the Second World War when one of its main founders, physical Robert Watson-Watt , allowed the Royal Air Force of the British Armed Forces had technological superiority to be able to measure and detect the distances using radio.
However, the enemy planes were a threat even when yet radar existed. On that occasion, were born a few gadgets whose purpose was to detect any possible hostile air force used as a way to attack.
So, the main picture is taken at the American air base at Bolling Field in 1921. It is a system based on acoustic mirrors designed to listen engines aircraft located a long distance.
Just as a mirror is capable of bouncing light rays, acoustic mirrors can collect sound waves and concentrate on its core focus so amplify the sounds received . Before the advent of radar, experimented with multiple models and designs of these acoustic mirrors, a technology that today even we can look up comic
Credit . National Photo Co. .
October 15, 2015
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