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First Law of Thermodynamics

nounid 58036·updated May 18, 2026
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the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes

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synonym
conservation of energy
possessive
First Law of Thermodynamics's
pluralpossessive
First Law of Thermodynamicses'

Framework definitions

Wordset Dictionary1 senseview framework →
§1
the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes

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