/em'euh siv"i tee, ee"meuh-/, n. Thermodynamics.
the ability of a surface to emit radiant energy compared to that of a black body at the same temperature and with the same area.
[1875-80; EMISSIVE + -ITY]

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Universalium. 2010.

Look at other dictionaries:

  • Emissivity — Em is*siv i*ty, n. Tendency to emission; comparative facility of emission, or rate at which emission takes place; specif. (Physics), the rate of emission of heat from a bounding surface per degree of temperature difference between the surface and …   The Collaborative International Dictionary of English

  • Emissivity — Emissivity. См. Коэффициент излучения. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • emissivity — [ē΄mi siv′ə tē, em΄isiv′ə tē] n. the relative ability of a surface to radiate energy as compared with that of an ideally black surface under the same conditions …   English World dictionary

  • Emissivity — The emissivity of a material (usually written ε or e) is the relative ability of its surface to emit energy by radiation. It is the ratio of energy radiated by a particular material to energy radiated by a black body at the same temperature. A… …   Wikipedia

  • emissivity — surface emissivity …   Mechanics glossary

  • emissivity — emisijos geba statusas T sritis radioelektronika atitikmenys: angl. emission capability; emissive power; emissivity vok. Emissionsfähigkeit, f; Emissionsvermögen, n rus. эмиссионная способность, f pranc. pouvoir émissif, m …   Radioelektronikos terminų žodynas

  • emissivity — spinduliavimo geba statusas T sritis Standartizacija ir metrologija apibrėžtis Šiluminio spinduolio ir visiškojo spinduolio arba juodojo kūno energinių šviesių esant tai pačiai temperatūrai dalmuo. atitikmenys: angl. emissive power; emissivity;… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • emissivity — spinduliavimo geba statusas T sritis fizika atitikmenys: angl. emissive power; emissivity; radiation power vok. Ausstrahlungsvermögen, n; Strahlungsfähigkeit, f; Strahlungsvermögen, n rus. излучательная способность, f pranc. émissivité, f;… …   Fizikos terminų žodynas

  • emissivity — juodumo laipsnis statusas T sritis Energetika apibrėžtis Spinduliuojančio kūno energinė charakteristika, išreiškiama jo ir absoliučiai juodo kūno spinduliuotės tankių verčių santykiu. atitikmenys: angl. emissivity vok. Emissionsvermögen, n rus.… …   Aiškinamasis šiluminės ir branduolinės technikos terminų žodynas

  • emissivity — noun (plural ties) Date: 1880 the relative power of a surface to emit heat by radiation ; the ratio of the radiant energy emitted by a surface to that emitted by a blackbody at the same temperature …   New Collegiate Dictionary

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