Quantum mechanics is a branch of physics that studies the behavior of microscopic particles.

Fermi-Dirac statistics is a theory that combines quantum mechanics and statistical mechanics.

Statistical mechanics is a branch of physics that provides a theoretical framework for understanding macroscopic phenomena from a microscopic perspective.

He is majoring in statistics.

A fermion is one of the fundamental constituents of matter.

He is an expert in statistics.

He is majoring in statistics.

Fermi is an old unit and is not used much now.

The size of this atom is about 100 fermi.

Bose-Einstein statistics is one of the important concepts in quantum mechanics.