Definition of Pauli exclusion principle in English:

Share this entry

Pauli exclusion principle

(also Pauli's exclusion principle) Physics
The assertion that no two fermions can have the same quantum number.
Example sentences
  • Fermions obey the Pauli exclusion principle, which means that two of them cannot occupy the same quantum state.
  • For electrons, the Pauli exclusion principle paradoxically leads to an effective attraction that balances the particles' electrostatic repulsion at short distances.
  • In addition to electrons, the Pauli exclusion principle applies to all sub-atomic particles with half-integral spins, known as fermions, such as neutrons and protons.

Origin

1920s: named after W. Pauli (see Pauli, Wolfgang).

For editors and proofreaders

Syllabification: Pau·li ex·clu·sion prin·ci·ple

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.