Term: turbidity, \(\tau\)
https://doi.org/10.1351/goldbook.T06533

Definition:
The apparent absorbance of the incident radiation due to scattering. For small particles, direct proportionality exists between turbidity and the Rayleigh ratio.

Related Terms:
1) absorbance (http://doi.org/10.1351/goldbook.A00028).
2) scattering (http://doi.org/10.1351/goldbook.S05487).
3) rayleigh ratio (http://doi.org/10.1351/goldbook.R05159).

Source: Purple Book, 1st ed., p. 66 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: 'turbidity, \(\tau\)' 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.T06533

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