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Diffused lighting camouflage was a form of active camouflage using counter-illumination to enable a ship to match its background, the night sky, that was tested by the Royal Canadian Navy on corvettes during World War II. The principle was discovered by a Canadian professor, Edmund Godfrey Burr, in 1940.
Diffused lighting camouflage, in which visible light is projected on to the sides of ships to match the faint glow of the night sky, was trialled by Canada's National Research Council from 1941 onwards, and then by the Royal Navy, during the Second World War. Some 60 light projectors were mounted all around the hull and on the ships ...
The use of Yehudi lights to camouflage aircraft by matching their luminance with the background sky was developed, in part, by the US Navy's Project Yehudi from 1943 onwards, following pioneering experiments in the Canadian diffused lighting camouflage project for ships early in the Second World War. [3]
In the diffused lighting camouflage project, the Royal Canadian Navy experimented with variable counter-illumination camouflage to match horizon light levels and minimize ships' silhouettes during prolonged arctic twilight. During the experiments, one side of the test ship was faintly illuminated by projectors mounted outboard.
Military interest in active camouflage has its origins in Second World War studies of counter-illumination.The first of these was the so-called diffused lighting camouflage tested on Canadian Navy corvettes including HMCS Rimouski.
Scientists in China have created a new camouflaging material that changes colour in response to its surroundings, an advance they say may help develop clothing to make one “effectively invisible
HMS Largs by night with incomplete diffused lighting camouflage, 1942, set to maximum brightness Bulwark of HMS Largs showing 4 (of about 60) diffused lighting fittings, 2 lifted, 2 deployed Yehudi Lights raise the average brightness of the plane from a dark shape to the same as the sky.
Surviving in the wild is no easy feat, but thanks to evolution, many animals evade their predators with a clever deception of the eyes. Since the beginning of time animals have either adapted or ...
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