first law of thermodynamics
A fundamental principle in physics stating that energy cannot be created or destroyed, only transformed. Often contrasted with the second law.
See also: 熱力学第一法則 (ねつりきがくだいいちほうそく)
The first law of thermodynamics is a form of the law of conservation of energy.
この問題を解くには熱力学の第一法則を適用する必要がある。
To solve this problem, you need to apply the first law of thermodynamics.
Standard kanji spelling for the first law of thermodynamics.
Variant using numeral １ instead of 一; less common but still seen.
A compound of 熱力学 (thermodynamics), の (possessive particle), 第一 (first), and 法則 (law). The term is a direct translation of the English 'first law of thermodynamics'.