emissivity

listen to the pronunciation of emissivity
English - Turkish
salım gücü
(Gıda,Kimya,Otomotiv) yayıcılık
(Askeri) yayım kabiliyeti
(Otomotiv) yayma oranı
salıcılık
salim gücü
(Nükleer Bilimler) yayı (çıkarma) gücü
(Askeri) YAYIM KABİLİYETİ: Bir eşyanın kızılötesi spektrumda ışıma oranı. Siyah bir eşyanın yayım kabiliyeti 1,0'dır; diğer bütün eşya 1,0'in altında bir yayım kabiliyetine sahiptir
English - English
The energy-emitting propensity of a surface, usually measured at a specific wavelength
A measure of a surface's ability to emit long-wave infrared radiation or room temperature radiant heat energy Emissivity varies from 0 (no emitted infrared) to 1 (100% emitted infrared) The lower the emissivity, the lower the resultant U value
The property of emitting radiation; possessed by all materials to a varying extent
The ratio of total radiative output from a body per unit time per unit area at a specific temperature and wavelength to that of a black body under the same environmental conditions
the property of emitting heat radiation; possessed by all materials to a varying extent "Emittance" is the numerical value of this property, expressed as a decimal fraction, for a particular material Normal emittance is the value measured at 90° to the plane of the sample, and spherical emittance is the total amount emitted in all directions We are generally interested in spherical, rather than normal emittance Emittance values range from 0 05 for brightly polished metals (aluminum) to 0 96 for flat black paint Most nonmetals have high values of emittance
the fractional value between 0 and 1 that indicates how closely an object or surface approximates a perfect blackbody radiator, with 1 being a perfectly emitting blackbody This is a parameter used in radiative transfer modeling to characterize radiative properties of surfaces such as soil, rock, water, clouds
The ratio of energy emitted by a material to that which would be emitted by a blackbody at the same temperature
Tendency to emission; comparative facility of emission, or rate at which emission takes place, as of heat from the surface of a heated body
Symbol ?, a special case of exitance for a material with a specular surface and is opaque
relating to windows, the ability of the glazing to allow radiation to pass through it
the actual emittance of a radiating surface expressed as a fraction of the blackbody value for the surface temperature
The ratio of energy emitted by an object to the energy emitted by a blackbody at the same temperature The emissivity of an object depends upon its material and surface texture; a polished metal surface can have an emissivity around 0 2 and a piece of wood can have an emissivity around 0 95
The ratio of the radiant energy emitted by a source to the radiant energy of a perfect radiating surface (black box) having an equivalent surface area with all other relevant conditions being the same
  The ratio of power radiated by a substance to the power radiated by a blackbody at the same temperature (188)
(sol) The ratio of RADIANT ENERGY emitted by a body to that emitted by a perfect BLACKBODY A perfect blackbody has an emissivity of one; a perfect REFLECTOR, an emissivity of zero F - emissivite S - emisividad
the ratio of radiant energy from a material to that from a blackbody at the same kinetic temperature Materials may have wavelength-dependent emissivities between 0 and 1 0 (approximately the inverse of reflectance)
{i} ability to emit (Physics)
The ratio of the radiation emitted by a surface to that emitted by a black body at the same temperature (Source: Carbon Dioxide Information Analysis Center, 1990)
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
The ratio of radiation emitted from a surface compared to radiation emitted from a blackbody at the same temperature
the measure of a surface's ability to emit long-wave infrared radiation
Tendency to emission; comparative facility of emission, or rate at which emission takes place; the rate of emission of heat from a bounding surface per degree of temperature difference between the surface and surrounding substances (called by Fourier external conductivity)
The ratio of radiant flux from a body to that from a blackbody at the same kinetic temperature
The relative ability of a surface to emit heat by radiation
Emissivity is a surface characteristic of a material It is the relative ability of a surface to absorb and emit energy in the form of radiation Low-emissivity (Low-E) coatings reduce the normally relatively high surface emissivity of the glass The coatings are mainly transparent over the visible wavelengths but reflect long wave infra-red radiation towards the interior of the building The result is greatly reduced heat loss
the ratio of the actual amount of electromagnetic radiation emitted by an object to the amount emitted by an ideal blackbody at the same temperature
The ability of a material to emit heat by radiation
A property of a material, measured as the emittance of a specimen of the material that is thick enough to be completely opaque and has an optically smooth surface
The ratio of the radiation emitted by a surface to the radiation emitted by a perfect blackbody radiator at the same temperature