Definition of first law of thermodynamics First law of thermodynamics
We found 2 definitions of first law of thermodynamics from 2 different sources.
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What does first law of thermodynamics mean?
WordNet
Noun |
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| first law of thermodynamics - the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes | ||
| conservation of energy, law of conservation of energy | ||
| conservation the preservation and careful management of the environment and of natural resources | ||
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Wikipedia 
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The first law of thermodynamics says that heat transfer is a form of energy transfer and that energy does not vanish (law of conservation of energy).
History.
James Prescott Joule was the first person who found out by experiments that heat and work are convertible.
The first explicit statement of the first law of thermodynamics was given by "Rudolf Clausius" in 1850: "There is a state function E, called `energy', whose differential equals the work exchanged with the surroundings during an adiabatic process."
Thermodynamics and Engineering.
Because of this ambiguity, it is vitally important in any discussion involving the first law to explicitly establish the sign convention in use.
