# law of thermodynamics

Also found in: Thesaurus, Acronyms, Encyclopedia, Wikipedia.

## law of thermodynamics

n.
See chart at thermodynamics.

## law of thermodynamics

n
1. (General Physics) any of three principles governing the relationships between different forms of energy. The first law of thermodynamics (law of conservation of energy) states that the change in the internal energy of a system is equal to the sum of the heat added to the system and the work done on it. The second law of thermodynamics states that heat cannot be transferred from a colder to a hotter body within a system without net changes occurring in other bodies within that system; in any irreversible process, entropy always increases. The third law of thermodynamics (Nernst heat theorem) states that it is impossible to reduce the temperature of a system to absolute zero in a finite number of steps
2. (General Physics) Also called: zeroth law of thermodynamics the principle that if two bodies are each in thermal equilibrium with a third body then the first two bodies are in thermal equilibrium with each other
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 law of thermodynamics - (physics) a law governing the relations between states of energy in a closed systemlaw of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics"second law of thermodynamics - a law stating that mechanical work can be derived from a body only when that body interacts with another at a lower temperature; any spontaneous process results in an increase of entropythird law of thermodynamics - law stating that the entropy of a substance approaches zero as its temperature approaches absolute zerozeroth law of thermodynamics - the law that if two bodies are in thermal equilibrium with a third body then the first two bodies are in thermal equilibrium with each othernatural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"conservation of energy, first law of thermodynamics, law of conservation of energy - the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes
References in periodicals archive ?
If your theory is found to be against the second law of thermodynamics I can give you no hope; there is nothing for it but to collapse in deepest humiliation.
The third law of thermodynamics states that for pure crystals as the temperature of a system approaches absolute zero K, its entropy or disorder approaches zero.
Experiments over the years had suggested that if the second law of thermodynamics does break down at small scales, the violation is not very drastic.
The pumping of ever more photons into an arbitrary cavity while invoking reflection as a means to justify the buildup of the blackbody spectrum is forbidden by the first law of thermodynamics [10].
The Third Law of Thermodynamics states that for a perfect monatomic crystal, the entropy, S, approaches 0 as T approaches 0.
It's as interesting as watching ice melt, which happens to be a common example of entropy, a key property of the second law of thermodynamics.
And another: "According to the second law of thermodynamics, energy transformations result in the universe becoming more disordered.
Maxwell as a counter-example of the second law of thermodynamics, that is, a perpetuum mobile of the second kind.
Ethics are for human beings, and setting ethical boundaries for disciplines is like expecting the second law of thermodynamics to be, well, ethical.
This technique is based on the first law of thermodynamics for processes with finite speed It is presented a new PV/Px diagram that reveals the effects of pressure losses produced by friction, finite speed and throttling processes in the regenerator of the Stirling engine.
He covers a brief history of entropy and the second law of thermodynamics, all you need to know but never dared admit that you already knew, the uniform spatial distribution, the Boltzman distribution, the Maxwell-Boltzmann distribution, entropy and the second law in the world of marbles, and entropy and the second law in the real world.
What law of thermodynamics allows heat to be added to the building without raising its temperature?

Site: Follow: Share:
Open / Close