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
Source
Brian R. Martin (Particle Physics [2011], 02)
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?
Book Reference
Martin, Brian R.: 'Particle Physics' [One World 2011], p.29
Related Idea
Idea 21206 The properties of a particle are determined by its quantum numbers and its mass [Martin,BR]