Title: angular momentum
Long Title: IUPAC Gold Book - angular momentum
DOI: 10.1351/goldbook.A00353
Status: current
Index: quantity

Definition
Angular momentum, or moment of momentum of a particle about a point is a vector quantity equal to the vector product of the position vector of the particle and its momentum, \(L=r\times p\). For special angular momenta of particles in atomic and molecular physics different symbols are used.

Related Term
- momentum: https://dev.goldbook.iupac.org/terms/view/M04007

Source
- Green Book, 2nd ed., p. 12 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)

Other Outputs
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- xml: https://dev.goldbook.iupac.org/terms/view/A00353/xml

Citation: Citation: 'angular momentum' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.A00353
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Accessed: 2026-06-13T02:54:42+00:00