In thermodynamics, atheistic thermodynamics, as compared to “theistic thermodynamics”, refers to the view or belief that there is NO god involved, whatsoever, in any manner, in any part, origin, or aspect in thermodynamics and or the laws of thermodynamics, aka the two main laws of the universe.
In 1934, Harold Blum, in his "Consideration of Evolution from a Thermodynamic Point of View", stated argued that Gibbs energy change, as applied to evolution, via a theory he called "chemical peneplanation", yields a "directive factor" in evolutionary processes which persists through successive generations, and is a directing factor "outside of the theological doctrine".
- “Practically since its first definitive formulation by Darwin the concept of chance variation and natural selection has dominated the study of evolution, although frequent attempts have been made to replace or modify it. Probably most such attempts are provoked by a vaguely defined awareness of an insufficiency in the natural selection hypothesis, and the recognition of a directive factor in evolutionary processes which persists through successive generations. The latter concept which is commonly known as ‘orthogenesis’, is supported by considerable amount of evidence (Leo Berg, 1926), but at present is not widely accepted among biologists. The general reason for abandoning or neglecting this concept has been the failure, thus far, to demonstrate the existence of the necessary directing factor OUTSIDE of the theological doctrine; and one may suspect that fear of leaning too closely to such doctrine has caused most biologists to ‘shy off’ from orthogenesis. It will be the aim of the writer to indicate the actual existence of a directing factor in evolutionary processes, while at the same time avoiding all necessity of invoking theological concepts.”
In 1964, Ivan Bazarov, in his Thermodynamics, stated openly that the god is a "religious superstition" as follows:
- “The second law stages that the ‘entropy of the world tends to a maximum’. This means that the universe will sooner or later arrive at a state of thermodynamic equilibrium; then all processes will cease and settle down in a state of ‘thermal death’: the temperature at all places of the universe will be one and the same, all other intensive factors will be equalized and there will be no more causes capable of giving rise to any process whatsoever. This ‘theory’ of the thermal death leads directly to religious superstition — to the existence of god. In fact, since, according to Clausius, the universe moves continuously …”
- — Ivan Bazarov (1964), Thermodynamics (pg. 76) 
He then discussed Friedrich Engels’ creationism-pro view, that if the second law mandates a winding down of the universe, then a “stimulus from without” (aka god) would be needed for the initial winding up. Bazarov then, however, invalidated Engels’ argument, with recourse to the first law, in some way.
In 1988, Benjamin Kyle, in his “The Mystique of Entropy”, discussed both the Bazarov and Engels points of view, thematically taking sides with the atheism-pro Bazarov view, albeit not stating so directly. This was later expanded into Entropy: Reflections of a Classical Thermodynamics (1999) and published as an attached CD to the 1999 (third edition) of his Chemical and Process Thermodynamics textbook.
Discussion | Conflict
While the vast majority of thermodynamics authors are "atheist", very few will state so openly, generally per reasons of religious sensitivities. They are so-called "god-avoiding atheists", meaning they will avoid digression into the mire at all costs, if at all possible.
Knowing that that the word THERMO-dynamics, the bedrock of modern science, has the word "god" and sun "god families" (i.e. Ennead) embedded in the first to letters of its name, by repercussion of the fact that the "Th-", of thermodynamics, not to mention theology, theos (god), temperature, and atheism (no god), are etymologically rooted in the Greek letter "theta", symbol "Θ", "", or "", which is coded, via three different cyphers (9, 318, and Heliopolis sun god symbol hieroglyph), for the "sun god", we become aware of an embarrassing godly-slippery linguistic "backdoor", so to say. Hence, any so-called "THermodynamicist", who declared openly to be an open "aTHeist", has, by the very definition of what there are declaring, in English words, an ingrained, etymological, conflict of interest, right off the bat.
The following are related quotes:
- “In Blum’s ‘Evolution from a Thermodynamic Point of View’ (1935), we perceive in evolution a certain drive, an inherent direction, which is NOT to be identified on the basis here indicated with any teleological end.”
- — Roderick Seidenberg (1950), Post-Historic Man (pg. 151) 
- belief system is human chemical thermodynamics. Theology and thermodynamics both derived from the theta Θ, the Egyptian "sun" symbol. The former believes that the sun is a god, that rays of light are the fingers of god, and that one of these fingers gave humans morality, via ten commandments. The latter believes that the sun is a bound state of hydrogen and helium reacting to produce heat, that rays of light are photons, in the form of electromagnetic waves, and that morality is found in the symbols of physical chemistry.”
- — Libb Thims (65 AE), “mental note”, arisen while reflecting on new 20 Dec HCT draft cover, 7:35AM CST
- Atheistic religion – Hmolpedia 2020.
- Blum, Harold F. (1934). “A Consideration of Evolution from a Thermodynamic View-Point” (abs) (pdf), presented at the 94th meeting of the American Association for the Advancement of Science, Jun 20, in: The American Naturalist, 69(723):354-69, Jul-Aug, 1935.
- Bazarov, Ivan. (1964). Thermodynamics (translator: F. Immirzi and A. Hayes) (Engels, pg. 76). Pergamon.
- Seidenberg, Roderick. (1950). Posthistoric Man: an Inquiry (thermodynamics, 41+ pgs). University of North Carolina Press.
- Compare: “One’s theological holdings [can be divided] into two classes: those for which a man would go to the stake, and those for which a man would not go to the stake.” (Edwards A. Park, c.1870); or: “For the second law, I will burn at the stake.” (Heinz London, c.1933)