Ellipticity

{
  "id": "MLC-T-CHM-003815",
  "term": "Ellipticity",
  "field": "Chemistry",
  "definition": "A measure of the degree to which polarized light deviates from linear or circular polarization, specifically referring to the ratio of the minor axis to the major axis of the polarization ellipse. In circular dichroism spectroscopy, it quantifies the differential absorption of left and right circularly polarized light. Ellipticity is typically expressed in degrees or millidegrees.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "absorption index",
    "electromagnetic radiation",
    "path-length",
    "wavelength in vacuum"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 745 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/ellipticity/"
}