parabolic reflector

parabolic reflector
noun
a concave reflector used to produce a parallel beam when the source is placed at its focus or to focus an incoming parallel beam
Hypernyms: ↑reflector
Hyponyms: ↑parabolic mirror

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noun
1. or parabolic mirror : a concave mirror that has the form of a paraboloid of revolution so that rays emanating from the geometrical focus and reflected from the surface are all parallel to each other and to the axis of symmetry and rays from a distant source (as a star) are reflected to the focus and that is used in reflecting telescopes, searchlights, and headlights
2. : a similar device for the directional reflection of microwaves and sound waves

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parabolic mirror or parabolic reflector,
a concave mirror the reflecting surface of which has the shape of a paraboloid, capable of focusing rays parallel to its axis t a point without spherical aberration: »

Parabolic mirrors or reflectors are used in certain telescopes, automobile headlights, searchlights, etc.


Useful english dictionary. 2012.

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  • Parabolic antenna — A parabolic satellite communications antenna at Erdfunkstelle Raisting, the biggest facility for satellite communication in the world, in Raisting, Bavaria, Germany. It has a Cassegrain type feed. A parabolic antenna is an antenna that uses a… …   Wikipedia

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