Thermostatics

In thermodynamics, thermostatics refers to aspects of thermodynamics concerned with thermal equilibrium. [1] Thermostatics, in another sense, is the study of the equilibrium of heat. [2] Thermostatics is sometimes synonymously with the “thermodynamics of equilibrium” or equilibrium thermodynamics. The term “thermostatics”, and its later cousin “thermostatistics”, in a general sense, are both rather ill-defined, in that they each came into use without explicit definition, referring to a mixture of thermodynamics, statics, statistics, and information theory. The term, for instance, is not found in science dictionaries.

Etymology
The etymology of thermostatics is a bit difficult to track down. According to one references, it is a humorous coinage of Ilya Prigogine used in a pejorative way to label "classical thermodynamics" tracing to sometime after 1845. [7]

The term “thermostatics” in a dominate usage sense, however, seems to be a product of the MIT school of thermodynamics, a term used significantly by American thermodynamicist Myron Tribus, beginning in 1956, and later by Herbert Callen in 1960. [3]
In 1965, American physicist Edwin Jaynes wrote that “classical thermodynamics … is becoming called increasingly, thermostatics”. [4] American physicist Laszlo Tisza, picked up on the term in 1966, using phrases such as the “fundamental theorem of thermostatics” as well as "Gibbsian thermostatics”, in his Generalized Thermodynamics textbook, but never seems to define the term thermostatics, itself. [5] The second edition of Callen’s textbook, becoming one of the most-referenced thermodynamics publications, was retitled as Thermodynamics: an Introduction to Thermostatistics, a change that seems to be modeled on Dutch-born English physicist Dirk ter Haar’s 1966 book Elements of Thermostatistics, the second edition of the book Elements of Thermodynamics published in 1960. [6] In each case, the term thermostatistics seems to refer to the topic of: thermodynamics + statistical mechanics.

References
1. Thermostatics – OnPedia.
2. (a) Thermostatics – TheFreeDictionary.com
(b) Thermostatics – YourDictionary.com
3. (a) Tribus, Myron. (1956). “Information Theory as the Basis for Thermostatics and Thermodynamics”, General Systems: Yearbook of the Society for Advancement.
(b) Tribus, Myron. (1959). Thermostatics and Thermodynamics: an Introduction to Energy, Information, and States of Matter: Part I and II. Van Nostrand.
(c) Callen, Herbert B. (1960). Thermodynamics: an Introduction to the Physical Theories of Equilibrium Thermostatics and Irreversible Thermodynamics. John Wiley & Sons.
4. Jaynes, Edwin T. (c.1965). Thermodynamics, (ch. 1: Development of Thermodynamics, 49-pgs, ch. 2: Use of Jacobians in Thermodynamics, 17-pgs, ch. 5: Gibbs Formalism: Physical Derivation, 30-pgs). Unpublished Book, 9+ chapters.
5. Tisza, Laszlo. (1966). Generalized Thermodynamics. Cambridge, (section: 2.3: Gibbsian thermostatics, pgs 38-48, pg. 104). Massachusetts: The MIT Press.
6. (a) Callen, Herbert B. (1985). Thermodynamics and an Introduction to Thermostatistics (2nd ed.). New York: John Wiley & Sons.
(b) Haar, Dirk ter. (1966). Elements of Thermostatistics. Holt, Rinehart & Winston.
7. Greenberg, Arthur. (2007). Chemistry: Decade by Decade (pg. 148). Infobase Publishing.

External links
‚óŹ Thermostatics – WolframAlpha.com.

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