What is emissivity and why is it important? | 合法醫療器材資訊網
Emissivityisdefinedastheratiooftheenergyradiatedfromamaterial'ssurfacetothatradiatedfromaperfectemitter,knownasablackbody,atthesame ...
Emissivity depends on the material and the surface qualityAll objects at temperatures above absolute zero emit thermal radiation. However, for any particular wavelength and temperature, the amount of thermal radiation emitted depends on the emissivity of the objects surface.
Emissivity is defined as the ratio of the energy radiated from a materials surface to that radiated from a perfect emitter, known as a blackbody, at the same temperature and wavelength and under the same viewing conditions. It is a dimensionless number between 0 (for a perfect reflector) and 1 (for a perfect emitter).
The emissivity of a surface depends not only on the material but also on the nature of the surface. For example, a clean and polished metal surface will have a low emissivity, whereas a roughened and oxidised metal surface will have a high emissivity. The emissivity also depen...
發射率 | 合法醫療器材資訊網
Emissivity | 合法醫療器材資訊網
What is emissivity and why is it important? | 合法醫療器材資訊網
What is Emissivity? | 合法醫療器材資訊網
emissivity | 合法醫療器材資訊網
Emissivity | 合法醫療器材資訊網
Infrared Emissivity Table | 合法醫療器材資訊網
Emissivity | 合法醫療器材資訊網
Emissivity | 合法醫療器材資訊網
emissivity | 合法醫療器材資訊網
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