Review of the Development of the Theory of Radiation of Heat

Abstract

Researches concerning the radiation of heat began with the observation that there is an action at a distance with states of heat. Many investigators attributed such weight to the physiological distinction of quality of the sensation of heat and that of cold that they regarded heat and cold not as different degrees of homogeneous states but as opposite states of different kinds. Thus, in addition to rays which transfer heat were assumed rays which transfer cold.