Single Idea 21207

[catalogued under 27. Natural Reality / B. Modern Physics / 2. Electrodynamics / d. Quantum mechanics]

Full Idea

The 'exclusion principle' initially stated that no two electrons in a system could simultaneously occupy the same quantum state and thus have the same set of quantum numbers. The principle actually applies to all fermions, but not to bosons.

Gist of Idea

The Exclusion Principle says no two fermions occupy the same state, with the same numbers


Brian R. Martin (Particle Physics [2011], 02)

Book Reference

Martin, Brian R.: 'Particle Physics' [One World 2011], p.29

A Reaction

This principle is said to be at the root of atomic structure, making each element unique. What exactly is a 'system'? Why does this principle hold? How do you ensure two women don't wear the same dress at a party?

Related Idea

Idea 21206 The properties of a particle are determined by its quantum numbers and its mass [Martin,BR]