Condensed Matter

    

Further Insight Relative to Cavity Radiation: A Thought Experiment Refuting Kirchhoff's Law

Authors: Pierre-Marie Robitaille

Kirchhoff's law of thermal emission demands that all cavities contain blackbody, or normal, radiation which is dependent solely on the temperature and the frequency of observation, while remaining independent of the nature of the enclosure. For over 150 years, this law has stood as a great pillar for those who believe that gaseous stars could emit a blackbody spectrum. However, it is well-known that, under laboratory conditions, gases emit in bands and cannot produce a thermal spectrum. Furthermore, all laboratory blackbodies are constructed from nearly ideal absorbers. This fact strongly opposes the validity of Kirchhoff's formulation. Clearly, if Kirchhoff had been correct, then laboratory blackbodies could be constructed of any arbitrary material. Through the use of two cavities in temperature equilibrium with one another, a thought experiment is presented herein which soundly refutes Kirchhoff's law of thermal emission.

Comments: 3 Pages. As published on January 18th, 2014 - Progress in Physics, 2014, 10(1), 38-40.

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Submission history

[v1] 2014-01-12 22:32:13
[v2] 2014-01-18 05:25:23

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