large particle 

in radiation scattering
https://doi.org/10.1351/goldbook.L03457
A particle with dimensions comparable with the wavelength of the radiation in the medium or larger. In practice a particle must be treated as large if its largest dimension exceeds about one-twentieth of the wavelength employed.
Source:
Purple Book, 1st ed., p. 65 [Terms] [Book]
Citation: 'large particle' 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.L03457 RIS BibTex EndNote
Div. IVPDFTextXMLJSON
Last revised: February 24, 2014