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light meter scale

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  • 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

  • light meter — Synonyms and related words: ASA exposure index, ASA scale, British candle, DIN number, Hefner candle, Scheiner scale, bougie decimale, candle, candle lumen, candle power, candle foot, candle hour, candle meter, decimal candle, exposure, exposure… …   Moby Thesaurus

  • light — Synonyms and related words: ASA scale, Anschauung, British candle, Hefner candle, Mickey Mouse, Paphian, Scheiner scale, Very flare, abuse, accented, account, acquaintance, active, aerial, aeriform, aery, agile, airish, airlike, airy, alabaster,… …   Moby Thesaurus

  • 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 value — NOTOC In photography, light value has been used to refer to a ldquo;light level rdquo; for either incident or reflected light, often on a base 2 logarithmic scale.The term does not derive from a published standard, and has had severaldifferent… …   Wikipedia

  • Selenium meter — A selenium meter is a light measuring instrument based photoelectric properties of selenium. The most common usage of such light meters is measuring the exposure value for photography. The electric parts of such a meter are an electromagnetic… …   Wikipedia

  • exposure meter — Photog. an instrument for measuring the intensity of light in a certain place or upon a certain object, having an adjustable scale for determining the optimum relations of shutter speeds and stops at each intensity. Also called light meter. [1890 …   Universalium

  • SWR meter — The SWR meter or VSWR (voltage standing wave ratio) meter measures the standing wave ratio in a transmission line. This is an item of radio equipment used to check the quality of the match between the antenna and the transmission line.The VSWR… …   Wikipedia

  • Peak programme meter — A typical British quasi PPM. Each division between 1 and 7 is exactly four decibels and 6 is the intended maximum level. A peak programme meter (PPM) is an instrument used in professional audio for indicating the level of an audio signal. There… …   Wikipedia

  • Variable speed of light — The variable speed of light (VSL) concept states that the speed of light in a vacuum, usually denoted by c , may not be constant in some cases. In most situations in condensed matter physics when light is traveling through a medium, it… …   Wikipedia

  • Faster-than-light — (also superluminal or FTL) communications and travel refer to the propagation of information or matter faster than the speed of light. Science fiction style space travel, dubbed true FTL, defies known physics.Under the special theory of… …   Wikipedia

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