heliostat

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 Heliostat on Wikipedia

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See also: Heliostat

English[edit]

A heliostat. In this case and most others, the mirror rotates on a computer-controlled, motor-driven alt-azimuth mount.

Etymology[edit]

Circa 1750, from New Latin heliostata, from Ancient Greek ἥλιος (hḗlios, sun) + Latin status (stationary).

Noun[edit]

heliostat (plural heliostats)

  1. A device that includes a plane mirror which turns so as to keep reflecting sunlight toward a predetermined target, compensating for the sun's apparent motions in the sky. The target may be a physical object, distant from the heliostat, or a direction in space, and is almost always stationary relative to the heliostat, so the light is reflected in a fixed direction.

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