Title: angle of incidence
Long Title: IUPAC Gold Book - angle of incidence
DOI: 10.1351/goldbook.08222
Status: current

Definition
Angle between a beam of electromagnetic radiation and a line normal to a surface.

Related Term
- electromagnetic radiation: https://goldbook.iupac.org//terms/view/08242

Source
- PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 651 (https://doi.org/10.1515/pac-2019-0203)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/08222/html
- json: https://goldbook.iupac.org/terms/view/08222/json
- xml: https://goldbook.iupac.org/terms/view/08222/xml

Citation: Citation: 'angle of incidence' 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.08222
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Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-07-29T11:59:54+00:00