A Caltech Library Service

On the irreversible production of entropy

Tolman, Richard C. and Fine, Paul C. (1948) On the irreversible production of entropy. Reviews of Modern Physics, 20 (1). pp. 51-77. ISSN 0034-6861. doi:10.1103/RevModPhys.20.51.

See Usage Policy.


Use this Persistent URL to link to this item:


The importance of irreversible entropy production is emphasized. The first and second laws of thermodynamics are both expressed by equalities by giving due recognition to the irreversible production of entropy. By specialization and combination of these equations, an "efficiency equation" is derived, applicable to cyclical and steady-state processes, and useful in studying the efficiency of practical processes. The thermodynamic theory involved in determining amounts of entropy produced by irreversible processes is investigated, and six cases of irreversible entropy production are treated in detail. The "efficiency equation" is applied to four practical processes to illustrate its usefulness in analyzing the causes of inefficiency in practical situations. The first and second law equations are directly applied to two theoretical problems so selected as to illustrate differences in the theoretical importance of being able to express the second law in the form of an equality. The concept of temperature is discussed, and the extent of its validity under non-equilibrium situations is analyzed.

Item Type:Article
Related URLs:
URLURL TypeDescription
Additional Information:©1948 The American Physical Society.
Issue or Number:1
Record Number:CaltechAUTHORS:TOLrmp48
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4392
Deposited By: Tony Diaz
Deposited On:21 Aug 2006
Last Modified:08 Nov 2021 20:17

Repository Staff Only: item control page