- luminance
- luminance "luminousness," 1862, from L. luminantem (nom. luminans), prp. of luminare (see LUMINARY (Cf. luminary)).
Etymology dictionary. 2014.
luminance
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Luminance — is a photometric measure of the density of luminous intensity in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle. The SI unit for luminance is… … Wikipedia
luminance — [ lyminɑ̃s ] n. f. • 1948; du rad. de lumineux ♦ Phys. Quotient de l intensité lumineuse d une surface par l aire apparente de cette surface pour un observateur lointain (exprimé en candela par mètre carré). ⇒ brillance. ● luminance nom féminin… … Encyclopédie Universelle
luminance — [lo͞o′mə nəns] n. [< L lumen (gen. luminis), LIGHT1 + ANCE] 1. the quality or state of being luminous 2. a measure of the brightness of a luminous surface, measured in candelas per unit area … English World dictionary
Luminance — En physique, la luminance est l intensité d une source étendue dans une direction donnée, divisée par l aire apparente de cette source dans cette même direction. Ne pas confondre la luminance tout court, qui est une grandeur photométrique… … Wikipédia en Français
luminance — skaistis statusas T sritis Standartizacija ir metrologija apibrėžtis Paviršiaus elemento šviesos pasirinktąja kryptimi stipris, padalytas iš statmenosios to elemento projekcijos į statmeną pasirinktajai krypčiai plokštumą ploto. Matavimo vienetas … Penkiakalbis aiškinamasis metrologijos terminų žodynas
luminance — skaistis statusas T sritis fizika atitikmenys: angl. brightness; luminance; luminosity vok. Helligkeit, f; Leuchtdichte, f rus. яркость, f pranc. brillance, f; luminance, f … Fizikos terminų žodynas
luminance — /looh meuh neuhns/, n. 1. the state or quality of being luminous. 2. Also called luminosity. the quality or condition of radiating or reflecting light: the blinding luminance of the sun. 3. Optics. the quantitative measure of brightness of a… … Universalium
luminance — lu•mi•nance [[t]ˈlu mə nəns[/t]] n. 1) the state or quality of being luminous 2) the quality or condition of radiating or reflecting light: the blinding luminance of the sun[/ex] 3) opt the quantitative measure of brightness of a light source or… … From formal English to slang
Luminance — A&V The measurable, luminous intensity of a video signal. Differentiated from brightness in that the latter is nonrneasurable and sensory. The color video picture information contains two components: luminance (brightness and contrast) and… … Audio and video glossary
luminance — skaistis statusas T sritis chemija apibrėžtis Šviečiančio ar šviesą sklaidančio paviršiaus šviesos ryškumas tam tikra kryptimi (Cd/m²). atitikmenys: angl. brightness; luminance; luminosity rus. яркость … Chemijos terminų aiškinamasis žodynas
