Entropy, a resurrection of caloric-a look at the history of thermodynamics
Open Access
- 1 April 1985
- journal article
- Published by IOP Publishing in European Journal of Physics
- Vol. 6 (2), 108-115
- https://doi.org/10.1088/0143-0807/6/2/009
Abstract
The entropy introduced into physics by Clausius was, contrary to general belief, not a new physical quantity but the reconstruction of the 'quantity of heat' conceived about one hundred years earlier by the Scottish chemist Black. The same quantity was also used under the name 'calorique' by Carnot in his work which laid the foundations of thermodynamics. That entropy and Black's 'quantity of heat' are only two names for the same physical quantity is not only of historical interest but is of significance to the the teaching of thermodynamics as well. It asserts that entropy can be visualised as a kind of substance which obeys 'half a conservation theorem': it can be created but not destroyed.Keywords
This publication has 2 references indexed in Scilit:
- Energy forms or energy carriers?American Journal of Physics, 1983
- XXXVI.—An Account of Carnot's Theory of the Motive Power of Heat;with Numerical Results deduced from Regnault's Experiments on Steam.Transactions of the Royal Society of Edinburgh, 1849