Translations for „emissivity“ in the English » Arabic Dictionary

emissivity <emissivity; emissivities> N

emissivity

قوة الإشعاع

emissivity PHYS

emissivity

قدرة ابتعاثية أو اصدارية

Monolingual examples (not verified by PONS Editors)

English

This emissivity depends upon the wavelength and upon the angle of the outgoing thermal radiation.

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A black body has an emissivity of 1 and a perfect reflector has an emissivity of 0.

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This is because the absorptivity is averaged with weighting for the solar spectrum, while the emissivity is weighted for the emission of the paint itself at normal ambient temperatures.

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Average and overall absorptivity and emissivity data are often given for materials with values which "differ" from each other.

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Furthermore, we have to specify whether the emissivity process is extinction, scattering, absorption, or polarisation.

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The emissivity, reflectivity and absorptivity of a floor surface are critical determinants of its heat exchange with the occupants and room.

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For example, white paint is quoted as having an absorptivity of 0.16, while having an emissivity of 0.93.

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Absorptivity, reflectivity, and emissivity of all bodies are dependent on the wavelength of the radiation.

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As the ratio pyrometer came into popular use, it was determined that many materials, of which metals are an example, do not have the same emissivity at two wavelengths.

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However, it is typical in engineering to assume that a surface's spectral emissivity and absorptivity do not depend on wavelength, so that the emissivity is a constant.

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