Pauli exclusion principle


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Pau·li exclusion principle

 (pô′lē, pou′-)
[After Wolfgang Pauli.]

Pauli exclusion principle

n
(Atomic Physics) physics the principle that two identical fermions cannot occupy the same quantum state in a body such as an atom. Sometimes shortened to: exclusion principle

exclu′sion prin`ciple



n.
the quantum-mechanical principle that no two identical particles having spin equal to half an odd integer can be in the same quantum state.
Also called Pauli exclusion principle.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Pauli exclusion principle - no two electrons or protons or neutrons in a given system can be in states characterized by the same set of quantum numbers
law of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics"
References in periodicals archive ?
Since the electric wires are essentially one-dimensional, the effect of the Pauli exclusion principle is dramatic, comparable to an accident on a single-lane road that brings traffic to a standstill.
Following the Pauli exclusion principle, each configuration should not contain two or more identical single particle quantum states of the same Dirac particle.
The 14 chapters begin with the theory of relativity and continue through configuration of the atom, quantum state of atoms, electron spin, the Pauli exclusion principle, X-rays, and other topics, ending with a chapter on high-energy physics.
3) For example, in chapter 2, he says "indistinguishability leads directly to the famous Pauli exclusion principle (not true--one also needs the fermionic nature of electrons) and in chapter 6, he tells us that an "elevator's acceleration due to gravity cancels the gravitational force, and the freely falling elevator becomes an inertial reference frame" (gravity--that is, the curvature of space--causes the acceleration, rather than canceling it; by "inertial frame" we usually mean a non-accelerating frame).
This repulsive force stems from a quantum mechanical effect called the Pauli exclusion principle.