Thermodynamics Quotes (8)

Classical thermodynamics ... is the only physical theory of universal content which I am convinced ... will never be overthrown.
Quoted in Albert Einstein and Stephen Hawking (ed.), A Stubbornly Persistent Illusion (2007), 353.
See also:  |  Theory (95)

Heat can never pass from a colder to a warmer body without some other change, connected therewith, occurring at the same time.
'On a Modified Form of the Second Fundamental Theorem in the Mechanical Theory of Heat', Philosophical Magazine, 1856, 12, 86.
See also:  |  Heat (10)

In all cases where work is produced by heat, a quantity of heat proportional to the work done is expended; and inversely, by the expenditure of a like quantity of work, the same amount of heat may be produced.
'On the Moving Force of Heat, and the Laws regarding the Nature of Heat itself which are deducible therefrom', Philosophical Magazine, 1851, 2, 4.
See also:  |  Heat (10)

Laws of Thermodynamics
1) You cannot win, you can only break even.
2) You can only break even at absolute zero.
3) You cannot reach absolute zero.
Anonymous
Folklore amongst physicists.
See also:  |  Saying (24)

The fundamental laws of the universe which correspond to the two fundamental theorems of the mechanical theory of heat.
1. The energy of the universe is constant.
2. The entropy of the universe tends to a maximum.
The Mechanical Theory of Heat (1867), 365.
See also:  |  Entropy (11)  |  Heat (10)  |  Universe (59)

The laws of thermodynamics, as empirically determined, express the approximate and probable behavior of systems of a great number of particles, or, more precisely, they express the laws of mechanics for such systems as they appear to beings who have not the fineness of perception to enable them to appreciate quantities of the order of magnitude of those which relate to single particles, and who cannot repeat their experiments often enough to obtain any but the most probable results.
Elementary Principles in Statististical Mechanics (1902), Preface, viii.
See also:  |  Statistical Mechanics (4)

The production of motion in the steam engine always occurs in circumstances which it is necessary to recognize, namely when the equilibrium of caloric is restored, or (to express this differently) when caloric passes from the body at one temperature to another body at a lower temperature.
'Réflexions sur la Puissance Motrice du Feu et sur les Machines Propres a Développer cette Puissance' (1824). Trans. Robert Fox, Reflexions on the Motive Power of Fire (1986), 64.
See also:  |  Heat (10)  |  Steam Engine (10)

We define thermodynamics ... as the investigation of the dynamical and thermal properties of bodies, deduced entirely from the first and second law of thermodynamics, without speculation as to the molecular constitution.
The Scientific Papers of James Clerk Maxwell (2003), 664-665.
See also:  |  Molecule (18)

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Original words on great scientific discoveries.
Darwin considers pros and cons of marriage.
James Clerk Maxwell's electric but poetic Valentine.
I have little patience with scientists who take a board of wood, look for its thinnest part and drill a great number of holes where drilling is easy. --Albert Einstein
I try to identify myself with the atoms...I ask what I would do if I were a carbon atom or a sodium atom. --Linus Pauling




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