Speed of light in a vacuum

{
  "id": "MLC-T-CHM-011172",
  "term": "Speed of light in a vacuum",
  "field": "Chemistry",
  "definition": "The constant physical speed at which all electromagnetic radiation, including light, propagates through a perfect vacuum. It is a fundamental constant of nature, denoted by the symbol 'c', and is independent of the motion of the source or observer. Its exact value is defined as 299,792,458 meters per second.",
  "references": [
    "BIPM, The International System of Units, SI Brochure, 9th ed. (2019), p. 127 (https://www.bipm.org/en/publications/si-brochure/)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/speed-of-light-in-a-vacuum/"
}