second law of thermodynamics
Physics term; refers to the principle that entropy in an isolated system never decreases.
See also: 熱力学第二法則 (ねつりきがくだいにほうそく)
According to the second law of thermodynamics, entropy increases.
Same meaning without the の; slightly more compact and also common in technical contexts.
Standard full form with kanji numerals.
Variant using Arabic numeral ２; common in technical writing.
Compound of 熱力学 (thermodynamics) + の (possessive particle) + 第二 (second) + 法則 (law).