exclusion principle

American  

noun

Physics.

1. the principle that in any system described by quantum mechanics no two identical particles having spin equal to half an odd integer can be in the same quantum state: first postulated for the electrons in atoms.

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exclusion principle British  

noun

1. See Pauli exclusion principle

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exclusion principle Scientific  

/ ĭk-sklo̅o̅′zhən /

1. See Pauli exclusion principle

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Etymology

Origin of exclusion principle

First recorded in 1925–30

Example Sentences

See Examples For:

exclusion principle

Pauli’s exclusion principle was merely a special case of this spin-statistics theorem, as it came to be known.

From Scientific American ● Nov. 22, 2022

Understanding the origin of Pauli’s exclusion principle would unlock explanations for all of these deep facts of quotidian life.

From Scientific American ● Nov. 22, 2022

We shall see in this section that the exclusion principle is key to the underlying explanations, and that it applies far beyond the realm of atomic physics.

From Textbooks ● Aug. 12, 2015

The competitive exclusion principle states that two species cannot occupy the same niche in a habitat: in other words, different species cannot coexist in a community if they are competing for all the same resources.

From Textbooks ● Apr. 25, 2013

The matter particles obey what is called Pauli’s exclusion principle.

From "A Brief History of Time: And Other Essays" by Stephen Hawking