{"term":{"id":"05239","title":"refraction effects","longtitle":"IUPAC Gold Book - refraction effects","doi":"10.1351\/goldbook.R05239","code":"R05239","status":"current","definitions":[{"id":1,"text":"The luminescence flux emitted from the interior of a rectangular sample reaching a photodetector place at some distance from the sample is decreased by a factor of approximately \\(n^{2}\\) (where \\(n\\) is the refractive index of the medium) compared with a medium whose refractive index is 1.0. Such effects are termed refraction effects.","links":[{"term":"luminescence","url":"https:\/\/goldbook.iupac.org\/terms\/view\/L03641"},{"term":"refractive index","url":"https:\/\/goldbook.iupac.org\/terms\/view\/R05240"}],"sources":["PAC, 1984, 56, 231. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-Part VI: molecular luminescence spectroscopy' on page 244 (https:\/\/doi.org\/10.1351\/pac198456020231)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/R05239\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/R05239\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/R05239\/plain"},"citation":"Citation: 'refraction effects' 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.R05239","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":"2026-06-28T13:53:37+00:00"}}