Emissivity | 合法醫療器材資訊網
Thethermalradiationfromveryhotobjects(seephotograph)iseasilyvisibletotheeye.Quantitatively,emissivityistheratioofthethermalradiationfromasurface ...
Capacity of an object to radiate electromagnetic energy
Blacksmiths work iron when it is hot enough to emit plainly visible thermal radiation.The emissivity of the surface of a material is its effectiveness in emitting energy as thermal radiation. Thermal radiation is electromagnetic radiation that most commonly includes both visible radiation (light) and infrared radiation, which is not visible to human eyes. A portion of the thermal radiation from very hot objects (see photograph) is easily visible to the eye.
The emissivity of a surface depends on its chemical composition and geometrical structure. Quantitatively, it is the ratio of the thermal radiation from a surface to the radiation from an ideal black surface at the same temperature as given by the Stefan–Boltzmann law. (A comparison with Plancks law is used if one is concerned with parti...
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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