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The mirror landing aid was invented by Nicholas Goodhart. [2] It was tested on the carriers HMS Illustrious and HMS Indomitable before being introduced on British carriers in 1954 and on US carriers in 1955. The mirror landing aid was a gyroscopically controlled concave mirror on the port side of the flight deck. On either side of the mirror ...
A concave mirror, or converging mirror, has a reflecting surface that is recessed inward (away from the incident light). Concave mirrors reflect light inward to one focal point. They are used to focus light. Unlike convex mirrors, concave mirrors show different image types depending on the distance between the object and the mirror.
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Catoptrics (from Ancient Greek: κατοπτρικός katoptrikós, "specular", [1] from Ancient Greek: κάτοπτρον katoptron "mirror") [2] deals with the phenomena of reflected light and image-forming optical systems using mirrors. A catoptric system is also called a catopter (catoptre).
Rear Admiral Hilary Charles Nicholas Goodhart CB FRAeS (28 September 1919 – 9 April 2011) was an engineer and aviator who invented the mirror-sight deck landing system for aircraft carriers. He was also a world champion and record breaker in gliding .
A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses and curved mirrors . Catadioptric combinations are used in focusing systems such as searchlights , headlamps , early lighthouse focusing systems, optical telescopes , microscopes , and telephoto lenses .
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Foucault test setup to measure a mirror. The Foucault knife-edge test is an optical test to accurately measure the shape of concave curved mirrors. It is commonly used by amateur telescope makers for figuring primary mirrors in reflecting telescopes. It uses a relatively simple, inexpensive apparatus compared to other testing techniques.