Furthermore, these ambivalent relationships may be made to hold or work indefinitely—as long as someone keeps putting energy into the relationship.  Such a task, however, is extremely taxing—and burnout will inevitably result.  That is, if you have to expend great amounts of time and energy in attempts to ‘work’ on your relationship, sort of like a job or chore, then resultantly, you will become drained in life; these situations are ill-advised as inevitably they won’t forever hold. 

To determine relationship 'types' - i.e. hot, ambient, or cold - from physical chemistry there exists a quantity called the change in Gibbs free energy ∆G, it is used to predict or measure the level of spontaneity or direction of progress for any reaction.  In the human life, the measurement of this quantity facilitates the study of the interactions of heat, work, enthalpy, entropy, and free energy changes in relation to spontaneity in human life processes.


      ■ Enthalpy: H
      ■ Entropy: S
      ■ Free Energy: G
      ■ Temperature: T
      ■ Heat: Q
      ■ Work: W

“The general struggle for existence of animate beings is not a struggle for raw materials – these, for organisms, are air, water and soil, all abundantly available – nor for energy which exists in plenty in any body in the form of heat, but a struggle for entropy, which becomes available through the transition of energy from the hot sun to the cold earth.”
- Ludwig Boltzmann, Austrian Physicist - 1886

“Life: organisms that feed on negative entropy.”
Erwin Schrodinger, Nobel Prize Physics - 1933

“Humans are dissipative systems far from thermodynamic equilibrium.”
Ilya Prigogine, Nobel Prize Chemistry - 1977

“The phenomenon of life, including its origin and evolution, against the backdrop of thermodynamics, has its paradox of resolution in the information content of the Gibbs free energy that enters the biosphere from outside sources.”
John Avery, Nobel Peace Prize - 1995

“An organism, consisting of different organs and tissues, is a 'complex living polycrystal’ formed from a diversity of molecules arranged into supramolecular formations - examples of which are DNA double helixes, the structures of proteids, and life itself!"
- Georgi Gladyshev, N.N. Semenov Institute of Chemical Physics - 2003

“The 'new' thermodynamics (i.e. human thermodynamics) has dethroned the idea that the gene is the central actor in the drama of life and put the focus properly back on the plot — the organized flows of matter and energy is what makes life what it is.”
- Scott Turner, author of The Extended Organism - 2005

“When you light a candle, the flame flares up but quickly settles into a steady state, burning as long as there is wick and wax. Life is a similar phenomenon — a controlled burning, a pattern of energy flow.”
- Eric Schneider & Dorion Sagan, authors of Into The Cool - 2005

In human life as, is true with all chemical reactions, relationships or bond formations come in three varieties:

Free energy change herein ∆G=0 defines equilibrium bonding situations.  Do not waste your time with these bonding situations, as they could adhere or form if so desired, but such a union would be underlyingly weak in constitution requiring repair with the slightest perturbation.  These bonds are characterized by a duality of energy ‘absorption’ and ‘release’, i.e. mediocre stability and or instability; in sum, a nil effect.


Free energy change herein ∆G>0 defines inherently harmful bonding situations.  Become incapable of adhering among, mixing with, or holding on to any bonding situation wherein there exists a feeling or show of aversion, hesitation, unwillingness, or disinclination to potentially work or function.  These bonds are characterized by energy ‘absorption’ and great instability.


Free energy change herein ∆G<0 defines favored bonding situations.  Be keen to those bonding situations arising from natural feeling or innate tendency without external constraint.  These bonds are characterized by energy ‘release’ and great stability.
In summary, the following axioms are to be memorized -- to be used efficiently in all avenues of life:
  Willard Gibbs [1839-1903]
In human terms, regarding thermoscales, measurements of 'hotness' comes in two varieties:

[1] Source: Poll conducted by Thims of 50 average Chicagoans [2005]

See: REACTIONS to this article by encyclopedia moderators when a shortened, more toned-down, version of it was posted to the online encyclopedia: wikipedia.com.
Mercury Hg beads seperating and reforming
Male human molecule in a state of confusion
              Cold        ‘Ambient’         ‘Hot
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The Principles of Human Thermodynamics
Bond Varieties
Thermodynamic Parameters
Thermodynamic Spontaneity
Human Chemical Reactions
Reaction Tendencies
HT Principles

This URL is the summary section for the Principles of Human Thermodynamics and similar writings on thermodynamics and its applications to human life as contributed by accredited researchers, scientists, and writers in this field. 

"To Promote the Art and Science of Human Thermodynamics for the Betterment of the Human Kind"


The equation central to the measurement of spontaneity in human life is the Gibbs free energy equation:

      ∆G = ∆H – T∆S

Here, the word ‘free’ has to be taken as meaning: available in the form of useful work. The thermodynamic criteria for spontaneity, in all human processes, being defined as interactions arising from natural feeling or innate tendency without external constraint, are as follows:

In 1876, American mathematican and physicist Willard Gibbs defined free energy

       G = H – TS

to be that quantity which would take into account the fact that when a chemical reaction takes place, heat is exchanged with the surroundings. In human life, heat exchanged between bonded individuals results to yield a quantity known as 'work'. Energy, in the form of work, can be released through the association of bonded individuals into the universe as long as the system is not at thermal equilibrium.
∆G < 0 ; reaction will proceed spontaneously – products are favored over reactants

∆G = 0 ; equilibrium – products and reactants are equally favored

∆G > 0 ; reaction will not occur – reactants are favored over products

Human chemical reactions occur when old bonds are broken and new bonds are formed.  The type of bond functioning to hold humans together in bonded relations or structures is the photon bond the second strongest of the four fundamental forces.  By definition, reactants are those molecular bonds existing at the start of the reaction and products are those new bonding arrangements in existence at the end of the reaction:


The reaction mechanism central to human life is the process wherein a man Mx meets or collides in time with a woman Fy over the substrate surface called ‘earth’ to form a bonded relationship:

    Mx + Fy --> MxFy

Furthermore, any and all sorts of reactions are possible. We could have a woman Fy bonding to her central objective O in life over the course of a number of years:

    Fy + O --> FyO

We could have a loose federal republic of 50 states St1, St2, St3, ... St50, uniting to form a country U.S.:

    St1 + St2 + St3 + ... + St50 --> US

With all reactions, desired bonds are characterized by stability and energy release; undesired bonds are characterized by instability and energy absorption. When more than two humans form a bond, they are then defined as 'systems'.  Specifically, human thermodynamic systems are defined as any bonded structure comprised of two or more people as in: relationships, families, networks, organizations, countries, etc., ‘open’ to the exchange or flux of matter and energy with their surroundings. Strong human bondings are characterized by possession of high binding energy, which is defined as the energy required to break up a nucleus, molecular formation, or system into its components.


All natural processes tend towards stability. If the total energy of a group of atoms, molecules, structures, or systems is lower than the sum of the energy of the component atoms, molecules, structures, or systems, then they bond together. A chemical reaction takes place when there is a bonding change.  To measure the likelihood of any reaction, the change in free energy for the reaction is calculated.  If ∆G is less then zero the reaction is likely to occur; if ∆G is greater than zero the reaction is not likely occur; if ∆G is equal to zero the reaction could go either way—however lacking in vigor for either case.

In common language, ∆G<O is analogous to being at the top of a big waterslide—it’s going to be fun and exciting all the way down.  ∆G>0 is like being at the bottom of a huge waterslide—it’s going to be a pain in the ass to climb to the top, you’re probably going to have to wait in line for a long time, and it might close before you reach the top.  ∆G=0 is similar to being around a small playground slide—you can keep going up and down it all day long—but sooner or later you’re going to get tired and bored—in time you will begin to seek other adventures.

Thermodynamically speaking, Bad Relationships or poor bonds ∆G>0 absorb energy from one’s life; discontentment results.  Good Relationships or fervent bonds ∆G<0 provide stability; out of such stability energy is released. Such energy is then inadvertently funneled outward, into the universe, through one’s bonded associations, as in work, friends, family, society, etc.; contentment results.

Ambivalent Relationships or Equilibrium bonds ∆G=0 both absorb and release energy from one’s life; confusion results.  These bonds are the most difficult to deal with, people in such relationships tend to cyclically break up and get back together again many times over.  Typically, however by the fifth or so breakup such couples seem to catch on to the underlying pattern in their relationship and in finality agree to call it quits.  
Building on these principles, the Belgian chemist Ilya Prigogine, in his 1977 publication entitled: Self-organization in non-equilibrium systems: from dissipative structures to order through fluctuations, moved the principles of non-equilibrium thermodynamics into the realm of ‘large molecular structures’. Specifically, Prigogine’s focus centered on the application of the second law of thermodynamics to complex systems, including living organisms. Building on this framework, ‘human thermodynamics’ was synthesized by American chemical engineer Libb Thims in 2002 deriving from a paper entitled: On the applicability of the Gibbs free energy equation to the human reaction mechanism.
In molecular form, physical heat correlates to electron-photon-nuclei interactions, and neurological heat correlates  absence of friction, complementary molecular arraignments, stability, and organization, etc.  Typically, intimate human relationship (bonds) are characterized by a physical-to-neurological composition ratio of 44:56 [1].  Heat by definition means energy in transitEnergy is defined predominately as one or more of the four fundamental forces.

As an example, take any two chemicals - atoms or molecules - and put them in a test-tube.  If the two molecules, when mixed together, like each other, a bond will form and energy will be given off—i.e. the test-tube will warm up.  If the two molecules, when mixed together, don’t like each other, then no reaction will occur and the test tube will remain cold.  If the two molecules, when mixed together, are ‘undecided’ about whether or not their relationship could ‘work’, the test tube may both warm up at times and cool down at times—overall there will be zero temperature change.  These rather difficult ambivalent relationships can be made to ‘work’, however, if one puts such a test-tube, or one’s life, over the flame of a Bunsen burner, i.e. adds energy to the reaction. 
1. Physical 'Hotness' Scales:
Ex: HotOrNot.com, AmIALooker.com, RateMe.com, RateMyBody.com,
Ex: HowHotAmI.com, BabeRating.com, etc.

2. Neurological 'Hotness' Scales:
Ex: occupation prestige [see: "Best to Marry" poll], personality, character, inner nature, etc.
Ex: mate selection criteria (see 60-Trait Table 1) in Journal of Evolutionary Psychology.