Attenuance

{
  "id": "MLC-T-CHM-000927",
  "term": "Attenuance",
  "field": "Chemistry",
  "definition": "A measure of the reduction in radiant power of an electromagnetic wave as it passes through a medium, resulting from absorption, scattering, or luminescence. It quantifies the total loss of light intensity due to all these processes combined. This quantity is dimensionless and is often expressed as a logarithm.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "absorbance",
    "luminescence",
    "scattering"
  ],
  "references": [
    "Green Book, 2nd ed., p. 32 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/attenuance/"
}