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first law of thermodynamics

DEFINITIONS OF: first law of thermodynamics

1

n the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes

Synonyms:
conservation of energy, law of conservation of energy
Type of:
law of thermodynamics
(physics) a law governing the relations between states of energy in a closed system
conservation
(physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations
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