Danish chemist John Schmitz's 2007 so-called "relative entropy of a human", i.e. “human entropy”, diagram, according to which he seems to conceptualize the notion that a person's level of entropy is the lowest (low entropy) at their last decades existence, prior to death (dereaction), e.g. an adult aged 50-70, after which 50-years later, following decomposition, a person's so-called afterlife entropy is as high (high entropy) as it was before his or her birth (reaction synthesis). [9] |
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Left: American physical chemist Martin Goldstein, in his 1993 section "Entropy of a Mouse", argues that to determine the free energy of formation of a mouse, we need to ask: [11]“What net energy and entropy changes would have been if simple chemical substances, present when the earth was young, were converted into [the mouse]. To answer this question, we must determine the energies and entropies of everything in the initial state and final state.” This very same logic, by extrapolation, can be applied to humans, in the calculation of the standard human free energy of formation. Right: An artistic rendition of relationship between Gibbs free energy G and the formation, “creation”, or synthesis of a human (human molecule) from standard state atoms and molecules of the periodic table and earlier earth conditions; from American physicist Daniel Schroeder’s 2000 Thermal Physics textbook, who comments: [23] “To create a [human] out of nothing and place it on the table, the magician need not summon up the entire enthalpy, H = U + PV. Some energy, equal to TS, can flow in spontaneously as heat; the magician must provide only the difference, G = H – TS, as work.” The original text and depiction, to note, showed a "rabbit", but, nevertheless, the same principles apply. |
See main: Bridgman paradoxIn 1946, American physicist Percy Bridgman, during the famous 1946 Harvard "what is life in terms of physics and chemistry?" debate, pointed out the paradox that while a so-called living thing, i.e. a human defined as a powered CHNOPS+ molecule, has an entropy, as does any body in the universe, there, apparently, is no way to calculate this entropy, being that, according to standard calculation of entropy methods (e.g. reaction calorimetry), one would have to either synthesize (create) or destroy (analyze) the organism in a reversible way. Bridgman commented how he saw a fundamental difficulty in the possibility of applying the laws of thermodynamics to any system containing living organisms (chnopsological organisms). French-born American physicist Leon Brillouin, in his “Life, Thermodynamics, and Cybernetics” (1949), summarized the “Paradox of Bridgman”, as he referred to it, as follows, which he says is Bridgman view: [1]
“How can we compute or even evaluate the entropy of a living being? In order to compute the entropy of a system, it is necessary to be able to create or to destroy it in a reversible way. We can think of no reversible process by which a living organism can be created or killed: both birth and death are irreversible processes. There is absolutely no way to define the change of entropy that takes place in an organism at the moment of death.”
“Human beings can be classified into low-entropic and high-entropic people.”
American electrochemical engineer Libb Thims's 2007 tabulation of the entropy components of a human, attributing the measure largely to neurological attributes. [2] |
E(S) ≥ E(H) – E(R)