noun
statistical mechanics
A branch of physics that uses probability theory to study the behavior of systems composed of a large number of particles.
統計力学は熱力学を微視的な立場から基礎づける学問だ。
Statistical mechanics is a discipline that provides a microscopic foundation for thermodynamics.
Thermodynamics deals with macroscopic properties like temperature and pressure, while statistical mechanics explains these properties from the microscopic behavior of particles.
Quantum mechanics describes the behavior of matter and energy at the atomic and subatomic scale, whereas statistical mechanics applies probability theory to large ensembles of particles, often incorporating quantum principles.
Compound of 統計 (statistics) and 力学 (mechanics), reflecting the field's use of statistical methods to describe mechanical systems.