exclusion principle


: a principle in physics: no two particles (such as electrons) in an atom or molecule can have the same set of quantum numbers

called also Pauli exclusion principle

Examples of exclusion principle in a Sentence

Recent Examples on the Web The exclusion principle ensures that electrons occupy different orbits around a nucleus. The Physics Arxiv Blog, Discover Magazine, 15 May 2020 But these have a powerful negative charge that would overwhelm the subtle self-ordering effect of the exclusion principle. The Physics Arxiv Blog, Discover Magazine, 15 May 2020 Which also has nothing to do with the exclusion principle, so at least it’s consistent. Sean Carroll, Discover Magazine, 23 Feb. 2012 Understanding the origin of Pauli’s exclusion principle would unlock explanations for all of these deep facts of quotidian life. Adam Becker, Scientific American, 22 Nov. 2022 Wolfgang Pauli’s exclusion principle, discovered in 1925 through studies of atomic spectra, showed the possibility of hole-like vacancies in atoms and molecules. Frank Wilczek, WSJ, 19 May 2022 That exclusion principle applies to the atoms in gas, too, which is what the scientists used to demonstrate it. Joshua Hawkins, BGR, 24 Nov. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'exclusion principle.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of exclusion principle was in 1926

Dictionary Entries Near exclusion principle

Cite this Entry

“Exclusion principle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exclusion%20principle. Accessed 16 Jun. 2024.

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