Term: refraction effects
https://doi.org/10.1351/goldbook.R05239

Definition:
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.

Related Terms:
1) luminescence (http://doi.org/10.1351/goldbook.L03641).
2) refractive index (http://doi.org/10.1351/goldbook.R05240).

Source: 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)

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. https://doi.org/10.1351/goldbook.R05239

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