Title: Newton diagram Long Title: IUPAC Gold Book - Newton diagram DOI: 10.1351/goldbook.N04137 Status: current Definition A vector diagram used to show the relationship between initial and final velocities or momenta in a two-particle scattering process. It is commonly used to relate laboratory and centre-of-mass coordinates. Related Term - scattering: https://goldbook.iupac.org//terms/view/S05487 Source - PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 175 (https://doi.org/10.1351/pac199668010149) Other Outputs - html: https://goldbook.iupac.org/terms/view/N04137/html - json: https://goldbook.iupac.org/terms/view/N04137/json - xml: https://goldbook.iupac.org/terms/view/N04137/xml Citation: Citation: 'Newton diagram' 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.N04137 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: 2026-04-18T15:07:30+00:00