Absorption pathlength

{
  "id": "MLC-T-CHM-000081",
  "term": "Absorption pathlength",
  "field": "Chemistry",
  "definition": "The distance that light or other electromagnetic radiation travels through a sample in an absorption spectrometer. In the context of the Beer-Lambert law, it is the length of the medium through which the radiation passes, represented by the symbol l or b. For a standard spectrophotometer cuvette, the internal dimension through which the light beam is directed defines the pathlength, which is most frequently 1 centimeter.",
  "subject": "Analytical Chemistry",
  "references": [
    "PAC, 1988, 60, 1449. 'Nomenclature, symbols, units and their usage in spectrochemical analysis - VII. Molecular absorption spectroscopy, ultraviolet and visible (UV/VIS) (Recommendations 1988)' on page 1453 (https://doi.org/10.1351/pac198860091449)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/absorption-pathlength/"
}