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direct-light luminaire

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  • Light pollution — This article is about light pollution in the visible spectrum. For information on pollution in the radio spectrum, see radio spectrum pollution. This time exposure photo of New York City at night shows skyglow, one form of light pollution …   Wikipedia

  • Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …   Wikipedia

  • Light meter — A light meter is a device used to measure the amount of light. In photography, a light meter is often used to determine the proper exposure for a photograph. Typically a light meter will include a computer, either digital or analogue, which… …   Wikipedia

  • Luminaire — /looh meuh nair /, Trademark. a lighting unit consisting of one or more electric lamps with all of the necessary parts and wiring. * * * or light fixture Complete lighting unit, consisting of one or more lamps (bulbs or tubes that emit light),… …   Universalium

  • Recessed light — A recessed light or downlight (also pot light in Canadian English, sometimes can light [for canister light] in American English) is a light fixture that is installed into a hollow opening in a ceiling. When installed it appears to have light… …   Wikipedia

  • Stage lighting — Modern stage lighting is a flexible tool in the production of theatre, dance, opera and other performance arts. Several different types of stage lighting instruments are used in the pursuit of the various principles or goals of lighting.… …   Wikipedia

  • Vari-Lite — VARI*LITE® is the brand name of one of the first automated variable color lighting systems to be created. Their automated lighting fixtures are commonly used in theatre, concerts, television, film and corporate events. HistoryThe VARI*LITE®… …   Wikipedia

  • Photometry (optics) — This article deals with the usage of this term in optics and lighting .Photometry is the science of measurement of light, in terms of its perceived brightness to the human eye. It is distinct from radiometry, which is the science of measurement… …   Wikipedia

  • Metal-halide lamp — A metal halide gas discharge lighting system provides illumination for a college baseball game at Olsen Field in College Station, Texas, United States. Note the various colors of the lights as they warm up. Metal halide lamps, a member of the… …   Wikipedia

  • Task lighting — Often task lighting refers to office task lighting, where the task light is used to increase illuminance on the reading area. However, the illuminance level is not the only factor governing visibility. Contrast (vision) too is important, and a… …   Wikipedia

  • Compact fluorescent lamp — Low energy light bulb redirects here. For other low energy bulbs, see LED lamp. The tubular type compact fluorescent lamp is one of the most popular types in Europe …   Wikipedia

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