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

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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

The competitive exclusion principle states that two species cannot occupy the same niche in a habitat.

From Textbooks ● Jun. 9, 2022

The competitive exclusion principle states that no two species can occupy exactly the same niche in exactly the same habitat at exactly the same time.

From Textbooks ● Jan. 1, 2018

Pauli’s exclusion principle says that two similar particles cannot exist in the same state; that is, they cannot have both the same position and the same velocity, within the limits given by the uncertainty principle.

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

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