emittance

listen to the pronunciation of emittance
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The quantity emitted (per unit area)
Also known as exitance (symbol M), the ratio of the emitted flux per unit area emitted to that of a black body at the same temperature and under the same conditions M=Wm-2
Emittance is a rating of the ability of a material to give off heat as radiant energy The emissivity of a material is expressed as a fraction Emittance values range from 0 05 for brightly polished metals to 0 96 for flat black paint
Power radiated per unit area of a radiating surface
The ratio of the radiant flux emitted by a specimen to that emitted by a blackbody at the same temperature and under the same conditions
the flux of electromagnetic radiant energy emitted by unit area of a radiating surface
The visible light emitted (but not reflected) by a surface, expressed in SI units of lumens per square meter (Radiant emittance is given in radiometric units of watts per square meter )
The light emitted by a surface This may have different intensities and spectral characteristics in different directions
{i} emissivity, ratio of radiation emitted by a surface to radiation emitted by a black body in similar conditions; radiating power, amount of power given off per unit of surface area (Thermodynamics)
(sol) (meas) A rating of the ability of a material to give off heat as RADIANT ENERGY F - emittance S - emitancia
emittance