The specific heat puzzle in black-body radiation

Discusses some misconceptions concerning the status and significance of specific heat in black-body radiation in equilibrium. An extension list of references is provided to indicate the various positions adopted by different authors on this issue. The way in which simple mathematical manipulation of thermodynamic formulae may lead to unphysical results for radiation in equilibrium is indicated and a consistent derivation and interpretation of the specific heat for black-body radiation is presented.