Absorption coefficient

{
  "id": "MLC-T-CHM-000075",
  "term": "Absorption coefficient",
  "field": "Chemistry",
  "definition": "A measure of how strongly a substance absorbs light at a specific wavelength. It quantifies the rate at which the intensity of light decreases as it passes through a material. The absorption coefficient is typically expressed in units of inverse length, such as cm⁻¹, and is related to absorbance by the path length and concentration of the absorbing species.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "absorbance",
    "amount concentration",
    "uptake"
  ],
  "references": [
    "Green Book, 2nd ed., p. 32 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)",
    "PAC, 2004, 76, 1033. 'Glossary of terms used in toxicokinetics (IUPAC Recommendations 2003)' on page 1036 (https://doi.org/10.1351/pac200476051033)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/absorption-coefficient/"
}