On the validity of Kirchhoff's law of thermal emission
On the validity of Kirchhoff's law of thermal emission
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DOI：
10.1109/tps.2003.820958
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发表时间：
2003-12-01
影响因子：
1.5
通讯作者：
Robitaille, PM
中科院分区：
文献类型：
--
作者：
Robitaille, PM
本文讨论了基尔霍夫定律的两个极端情况：完美吸收和完美反射。有人认为，基尔霍夫将他的定律推广到完美反射体是不合理的，基于实验证据。这极大地限制了基尔霍夫和普朗克提出的公式的普适性，因为黑体辐射取决于辐射物体的性质。在这方面，需要强调的是，石墨的独特之处在于它能充当近乎完美的吸收剂。这些结果在我们基于辐射辐射分析所有温度时是很重要的。
In this paper, Kirchhoff's law is discussed in the context of two extremes: the perfect absorber and the perfect reflector. It is argued that Kirchhoff's extension of his law to the perfect reflector is not justified based on experimental evidence. This greatly limits the universality of the formulations advanced by Kirchhoff and Planck in that blackbody radiation becomes dependent on the nature of the radiating object. In this regard, it is emphasized that graphite is unique in its ability to act as a nearly perfect absorber. The consequences are important in our analysis of all temperatures based on radiative emission.