Illuminating the blackbody
EUROPEAN JOURNAL OF PHYSICS(2011)
摘要
The blackbody is one of the first topics the students face at the beginning of their studies on modern physics. The usual framework supposes that a blackbody emits radiation in a 3D space in the form of massless bosons (photons). This paper investigates the blackbody radiation in a more general context in order to discuss the physical hypotheses underlying it. After exposing in a nutshell standard calculations about blackbody radiation, this paper investigates the influence of a non-zero photon mass and of the dimensionality of space on the blackbody radiation. It also discusses the possibility of a fermion-emitting blackbody. The aim of this paper is mainly pedagogical because experimental evidence points towards amassless photon propagating in a 3Dspace: exploring hypothetical worlds can help better understand our world.
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关键词
radiation,teaching methods,physics,astronomy,space sciences,energy
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