Does a Moving Body appear Cooler?

Abstract

THIS question was raised recently by Landsberg¹. Affirmative answers were given by Fremlin², Noerdlinger³ and Williams⁴ in agreement with currently accepted theory. Landsberg⁵ points out that the transverse Doppler effect and the equipartition theorem used by the authors mentioned equally admit a Lorentz invariant temperature as well as the accepted theory. With this view I agree, but question paragraph (c) of his letter, where he gives a general case against the orthodox transformation. He considers two bodies in uniform relative motion, these bodies being large enough to allow heat transfer at right angles to the direction of motion. Landsberg argues that if the bodies are identical no transfer of heat can take place, while the orthodox transformation requires the moving body to be cooler and so inducing heat (that is, energy) transfer.