photometric unit
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photometric unit — fotometrinis vienetas statusas T sritis fizika atitikmenys: angl. photometric unit vok. photometrische Einheit, f rus. фотометрическая единица, f pranc. unité photométrique, f … Fizikos terminų žodynas
Photometric Brightness — WikiV Luminous intensity of any surface in a given direction per unit of projected area of the surface viewed from that direction. The amount of brightness, measured in lumens that is given off by a pixel or area on a screen.[6] … Audio and video glossary
Rayleigh (unit) — The rayleigh is a unit of luminous flux used to measure air glow (auroras, for example). It was first proposed in 1956 by D. M. Hunten, noredlink|Franklin E. Roach, and J. W. Chamberlain. It is named for Robert John Strutt, 4th Baron Rayleigh… … 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
Luminance (Photometric Brightness) — WikiV Luminous intensity of any surface in a given direction per unit of projected area of the surface viewed from that direction. The amount of brightness, measured in lumens that is given off by a pixel or area on a screen.[6] … Audio and video glossary
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
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
Luminous intensity — In photometry, luminous intensity is a measure of the wavelength weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye.… … Wikipedia
Phot — A phot (ph) is a photometric unit of illuminance, or luminous flux through an area. It is not an SI unit, but rather is associated with the older centimetre gram second system of units.Metric equivalence::1 mathrm{phot} = 1… … Wikipedia
Рэлей — Если вы искали статью о лорде Рэлее, см. Стретт, Джон Уильям Рэлей (Рл или R) внесистемная единица измерения поверхностной яркости. Применяется при исследовании полярных сияний и свечения ночного неба. Введена в 1956 г.… … Википедия
SPU — short procedure unit; Society for Pediatric Urology; standardized photometric unit … Medical dictionary
