Stray light

{
  "id": "MLC-T-CHM-011465",
  "term": "Stray light",
  "field": "Chemistry",
  "definition": "Any light reaching the detector in a spectroscopic instrument that is outside the nominal wavelength or wavenumber range intended for measurement. This unwanted radiation can originate from imperfections in optical components, scattering within the instrument, or incomplete filtering. Stray light can lead to inaccuracies in absorbance or transmittance measurements, especially at high absorbance values.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "electromagnetic radiation",
    "spectrum",
    "wavenumber in vacuum"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 675 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/stray-light/"
}