Statistical Mechanics: Introduction

Statistical mechanics is the branch of theoretical physics that connects the microscopic properties of matter (atoms, molecules, quantum states) with its macroscopic thermodynamic behavior (temperature, pressure, entropy, energy). It provides the microscopic foundation of thermodynamics.

The Standard Model explains strong, weak and electromagnetic interactions. The famous relation $E=mc^2$ shows the equivalence of mass and energy.

In macroscopic systems: A gas contains ~\( 10^{23}\) molecules. It is impossible to track each particle individually. Instead of solving Newton’s equations for every particle, statistical mechanics:

Chronological Development of Statistical Physics