Small particle

{
  "id": "MLC-T-CHM-010950",
  "term": "Small particle",
  "field": "Chemistry",
  "definition": "A particle in a polymer solution whose largest dimension is considerably smaller than the wavelength of the incident light used in a scattering experiment. For such particles, the scattered light intensity is uniform in all directions (isotropic scattering), and the analysis is simplified as intramolecular interference effects are negligible. The criterion for a small particle is often taken as having a maximum dimension less than one-twentieth of the light's wavelength in the medium.",
  "subject": "Polymer",
  "see_also": [
    "wavelength"
  ],
  "references": [
    "Purple Book, 1st ed., p. 65 (http://old.iupac.org/publications/books/author/metanomski.html)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/small-particle/"
}