Term: dissymmetry of scattering
https://doi.org/10.1351/goldbook.D01808

Definition:
The ratio of two Rayleigh ratios for different angles of observation, i.e. \[z(\theta _{1},\, \theta _{2}) = \frac{R(\theta _{1})}{R(\theta _{2})}\] \[\theta _{1} < \theta _{2}\] The angles must be specified; in light scattering it is customary to let theta = 1 - theta1 and, most frequently, theta1 = 45° and theta2 = 135°.

Related Terms:
1) light scattering (http://doi.org/10.1351/goldbook.L03525).

Source: Purple Book, 1st ed., p. 67 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: 'dissymmetry of scattering' 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.D01808

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