noun Date: 1599 1. radiance 1 2. the density of radiation incident on a given surface usually expressed in watts per square centimeter or square meter

New Collegiate Dictionary. 2001.

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  • Irradiance — Irradiance, radiant emittance, and radiant exitance are radiometry terms for the power of electromagnetic radiation at a surface, per unit area. Irradiance is used when the electromagnetic radiation is incident on the surface. Radiant exitance or …   Wikipedia

  • irradiance — ● irradiance nom féminin Littéraire. Qualité de ce qui irradie ; rayonnement. irradiance [i(ʀ)ʀadjɑ̃s] n. f. ÉTYM. 1874, Verlaine; de irradiant, d après radiance. ❖ ♦ Littér. et rare. État, quali …   Encyclopédie Universelle

  • irradiance — ir*ra di*ance ([i^]r*r[=a] d[i^]*ans), irradiancy ir*ra di*an*cy ([i^]r*r[=a] d[i^]*an*s[y^]), n. [From {irradiant}.] [1913 Webster] 1. The act of irradiating; emission of rays of light. [1913 Webster] 2. That which irradiates or is irradiated;… …   The Collaborative International Dictionary of English

  • irradiance — (adj.) 1660s, from irradiant (1520s), from L. irradiantem (nom. irradians), prp. of irradiare (see IRRADIATE (Cf. irradiate)). Related: Irradiancy (1640s) …   Etymology dictionary

  • irradiance — [i rā′dē əns] n. 1. an irradiating; radiance 2. the amount of light or other radiant energy striking a given area of a surface; illumination: Also irradiancy irradiant adj …   English World dictionary

  • irradiance — energinė apšvieta statusas T sritis Standartizacija ir metrologija apibrėžtis Kuriame nors paviršiaus taške į paviršiaus elementą krintantis spinduliuotės (energijos) srautas, padalytas iš to elemento ploto. Matavimo vienetas – vatas kvadratiniam …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • irradiance — energinė apšvieta statusas T sritis fizika atitikmenys: angl. irradiance vok. Bestrahlungsstärke, f rus. энергетическая освещённость, f pranc. éclairement énergétique, m; irradiance, f …   Fizikos terminų žodynas

  • Irradiance — L’irradiance ou éclairement énergétique est un terme utilisé en radiométrie pour quantifier la puissance d un rayonnement électromagnétique par unité de surface, dans le système international d unités, elle est exprimée en watt par mètre carré… …   Wikipédia en Français

  • irradiance — apšvita statusas T sritis ekologija ir aplinkotyra apibrėžtis Žmonių, gyvūnų, augalų, medžiagų ar gaminių veikimas jonizuojančiąja spinduliuote. Pagal apšvitos kilmę skiriama gamtinė ir dirbtinė apšvita. atitikmenys: angl. exposure rate;… …   Ekologijos terminų aiškinamasis žodynas

  • irradiance — ə̇+ noun 1. obsolete : emission of rays (as of light) 2. : something (as intellectual or spiritual illumination) that is emitted like rays of light informed … with so splendid a spiritual irradiance J.P.Bishop 3. : radiant flux density on a given …   Useful english dictionary

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