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Diffused Lighting Camouflage
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. It attracted interest because it could help to hide ships from submarines in the Battle of the Atlantic, and the research project began early in 1941. The Royal Navy and the US Navy carried out further equipment development and trials between 1941 and 1943. The concept behind diffused lighting camouflage was to project light on to the sides of a ship, to make its brightness match its background. Projectors were mounted on temporary supports attached to the hull and the prototype was developed to include automatic control of brightness using a photocell. The concept was never put into production, though the Canadian prototypes did briefly see service. The Canadian ideas were adap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Largs
HMS ''Largs'' was a former Compagnie Generale Transatlantique (French Line) fruit (banana) ship captured by the Royal Navy ship HMS ''Faulknor'' five months after the Battle of France while docked at Gibraltar in November 1940 and commissioned as an "ocean boarding vessel". She subsequently became a Combined Operations Headquarters ship for almost every significant amphibious operation of World War II, including Operations ''Torch'', ''Husky'' and ''Overlord'' and she would be manned by naval, army and air force crew. Royal Navy Transfer She was built by France and named MV ''Charles Plumier'' in 1938. Following the creation of Vichy France and Free France she was transferred in 1941 to the Royal Navy, instead of being handed over to the Free French Navy, and renamed HMS ''Largs''. She took part in many operations including Operation Torch, the invasion of North Africa, and Operation Overlord, during the invasion of Normandy. she was the headquarters ship for Sword Beach. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corvettes
A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper (or " rated") warship. The warship class above the corvette is that of the frigate, while the class below was historically that of the sloop-of-war. The modern roles that a corvette fulfills include coastal patrol craft, missile boat and fast attack craft. These corvettes are typically between 500 tons and 2,000 .although recent designs may approach 3,000 tons, having size and capabilities that overlap with smaller frigates. However unlike contemporary frigates, a modern corvette does not have sufficient endurance and seaworthiness for long voyages. The word "corvette" is first found in Middle French, a diminutive of the Dutch word ''corf'', meaning a "basket", from the Latin ''corbis''. The rank "corvette captain", equivalent in many navies to "lieutenant commander", derives from the name of this type of ship. The rank is the most junior of three "captain" ranks in severa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colour Temperature
Color temperature is the color of light emitted by an idealized opaque, non-reflective body at a particular temperature measured in kelvins. The color temperature scale is used to categorize the color of light emitted by other light sources regardless of their temperature. Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, manufacturing, astrophysics, horticulture, and other fields. In practice, color temperature is meaningful only for light sources that do in fact correspond somewhat closely to the color of some black body, i.e., light in a range going from red to orange to yellow to white to bluish white; it does not make sense to speak of the color temperature of, e.g., a green or a purple light. Color temperature is conventionally expressed in kelvins, using the symbol K, a unit of measure for absolute temperature. Color temperatures over 5000 K are called "cool colors" (bluish), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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