Wavelength in vacuum

{
  "id": "MLC-T-CHM-012654",
  "term": "Wavelength in vacuum",
  "field": "Chemistry",
  "definition": "The spatial period of an electromagnetic wave as it propagates through a perfect vacuum, representing the distance between consecutive points of identical phase. It is calculated by dividing the speed of light in a vacuum (c) by the wave's frequency (ν). Unlike the wavelength in a material medium, the vacuum wavelength is a fundamental property of the radiation, independent of any medium's refractive index.",
  "synonyms": [
    "vacuum wavelength"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "electromagnetic radiation"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 678 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/wavelength-in-vacuum/"
}