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axial reflector

См. также в других словарях:

  • Ellipsoidal reflector spotlight — (abbreviated to ERS, or colloquially ellipsoidal) is the name for a type of stage lighting instrument, named for the ellipsoidal reflector used to intensify the light of a back loading lamp through the barrel and lens. Ellipsoidals may also be… …   Wikipedia

  • Headlamp — Headlight redirects here. For other uses, see Headlight (disambiguation). High Beams redirects here. For the urban legend also known by that name, see Killer in the backseat. A motor scooter s front with an impractical number and variety of… …   Wikipedia

  • 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

  • Antena — Saltar a navegación, búsqueda Para otros usos de este término, véase Antena (desambiguación). Antena de onda corta Cortina , Moosbrunn, Austria …   Wikipedia Español

  • Optical telescope — Eight Inch refracting telescope (Chabot Space and Science Center) An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum for directly viewing a magnified image for… …   Wikipedia

  • Helical antenna — Helical antennas can operate in one of two principal modes: normal (broadside) mode or axial (or endfire) mode.In the normal mode , the dimensions of the helix are small compared with the wavelength. The far field radiation pattern is similar to… …   Wikipedia

  • Offset dish antenna — Main types of parabolic antennas An offset dish antenna is a type of parabolic antenna. It is so called because the antenna feed is offset to the side of the reflector, in contrast to a typical axial fed parabolic antenna where the feed is in… …   Wikipedia

  • South African Astronomical Observatory — The Southern African Large Telescope Organ …   Wikipedia

  • Klystron — A klystron is a specialized linear beam vacuum tube (evacuated electron tube). Klystrons are used as amplifiers at microwave and radio frequencies to produce both low power reference signals for superheterodyne radar receivers and to produce high …   Wikipedia

  • Eye — For other uses, see Eye (disambiguation), Ocular (disambiguation), Ocular, and Oculus. For taxon specific articles, see human eye, simple eye in invertebrates, mollusc eye, and arthropod eye. Eye …   Wikipedia

  • microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …   Universalium

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