WOLFRAM|DEMONSTRATIONS PROJECT

Corner Reflector

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position of light source
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A corner reflector consists of three mutually perpendicular mirrors that reflect light back in the direction of the source. The many uses of this principle include bicycle reflectors, automobile tail lights, and radar targets or markers on ships, especially on lifeboats. NASA has put corner reflectors on the Moon to measure its orbit. A corner reflector is also known as a cat's eye reflector or a cube reflector.​