- photometric quantities
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фотометрические величины
Англо-русский словарь технических терминов. 2005.
photometric quantities
Смотреть что такое "photometric quantities" в других словарях:
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
Exposure (photography) — Underexposure redirects here. For the 2005 film by Oday Rasheed, see Underexposure (2005 film). A long exposure showing stars rotating around the southern and northern celestial poles. Credit: European Southern Observatory … Wikipedia
Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) … Wikipedia
Lux — For other uses, see Lux (disambiguation). A lux meter for measuring illuminances in work places. The lux (symbol: lx) is the SI unit of illuminance and luminous emittance measuring luminous power per area. It is used in photometry as a measure of … Wikipedia
Candela — This article is about the unit of luminous intensity. For other uses, see Candela (disambiguation). Photopic (black) and scotopic[1] (green) luminosity functions. The photopic includes the CIE 1931 standard[2] … Wikipedia
Luminous efficacy — is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power. Depending on context, the power can be either the radiant flux of the source s output, or it can be the total electric power consumed by… … Wikipedia
Candela per square metre — Nit (unit) redirects here. For the unit of information entropy, see Nat (information). The candela per square metre (cd/m2) is the derived SI unit of luminance. The unit is based on the candela, the SI unit of luminous intensity, and the square… … Wikipedia
Coefficient of utilization — A coefficient of utilization (CU) is a measure of the efficiency of a luminaire in transferring luminous energy to the working plane in a particular area. The CU is the ratio of luminous flux from a luminaire incident upon a work plane to that… … Wikipedia
Lambert (unit) — The lambert (symbol L, la or Lb) is a non SI unit of luminance named for Johann Heinrich Lambert (1728–1777), a Swiss mathematician, physicist and astronomer. A related unit of luminance, the foot lambert, is used in the lighting, cinema and… … Wikipedia
фотометрические величины — 3.27 фотометрические величины (photometric quantities): Все радиометрические величины находятся в соответствии с фотометрическими величинами через визуальное восприятие света. Для фотометрического излучения с длиной волны λ фотометрические… … Словарь-справочник терминов нормативно-технической документации
ГОСТ Р МЭК/ТО 60825-9-2009: Безопасность лазерной аппаратуры. Часть 9. Компиляция максимально допустимой экспозиции некогерентного оптического излучения — Терминология ГОСТ Р МЭК/ТО 60825 9 2009: Безопасность лазерной аппаратуры. Часть 9. Компиляция максимально допустимой экспозиции некогерентного оптического излучения: 3.3 апертура, конечная апертура (aperture, aperture stop): Конечная апертура… … Словарь-справочник терминов нормативно-технической документации
