XIV. On thermal radiation in absolute measure

Publisher Website
Google Scholar
Abstract
In June, 1884, I had the honour of laying before the Royal Society a communication “On the Permanent Temperature of Conductors through which an Electric Current is passing, and on Surface Emissivity." In carrying out the experiments described in that communication, it became evident that the method then adopted would lend itself readily to the determination in absolute measure of the loss of heat, under various circumstances, from the surface of electrically conducting wires; from metallic wires, for example, and from carbon filaments, such as those used in incandescent electric lamps. Accordingly, at the conclusion of the paper just referred to, the results were given of some preliminary experiments on radiation from metallic wires in high vacuums; and I desire in the present communication to give an account of a more extended investigation in the same direction. Although loss of heat by radiation and convection has been studied by various experimenters, few determinations in absolute measure of the loss under definite circumstances have been made; and, with the exception of those of Schleiermacher, to be mentioned immediately, no determinations, so far as I am aware, have been made through any considerable range of temperatures, or with a difference of temperatures between cooling body and surroundings of considerably more than 100°C.

This publication has 0 references indexed in Scilit: