Title: speed distribution function Long Title: IUPAC Gold Book - speed distribution function DOI: 10.1351/goldbook.S05853 Status: current Definition Probability density of finding a particle with speed within an interval between \(c\) and \(c+\mathrm{d}c\). Related Term - Probability density: https://goldbook.iupac.org//terms/view/P04856 Source - Green Book, 2nd ed., p. 39 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf) Other Outputs - html: https://goldbook.iupac.org/terms/view/S05853/html - json: https://goldbook.iupac.org/terms/view/S05853/json - xml: https://goldbook.iupac.org/terms/view/S05853/xml Citation: Citation: 'speed distribution function' 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.S05853 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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: 2026-06-20T02:48:42+00:00