Spectral quantities

{
  "id": "MLC-T-CHM-011138",
  "term": "Spectral quantities",
  "field": "Chemistry",
  "definition": "Physical quantities that describe the distribution of radiant energy or power as a function of wavelength, frequency, or wavenumber. These quantities are used to characterize the electromagnetic radiation emitted, absorbed, or scattered by a substance. Examples include spectral radiance, spectral radiant power, and spectral irradiance, each expressed per unit of the spectral variable.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "radiance",
    "radiant power",
    "wavelength"
  ],
  "references": [
    "Green Book, 2nd ed., p. 31 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/spectral-quantities/"
}