THIS communication gives a simple deduction of Carathéodory's principle from Kelvin's principle that it is impossible to convert an amount of heat completely into work in a cyclic process without ...

William Thomson (who later became Lord Kelvin) suggested a thermodynamic temperature scale in which the ratio of temperatures above an 'absolute zero' would be in proportion to the heat absorbed ...

and that on the whole his investigations do [not seem to prove augmentation of conductivity with temperature; and he kindly gives me, with permission to communicate to Nature, the following ...