Emission spectrum

{
  "id": "MLC-T-MET-005360",
  "term": "Emission spectrum",
  "field": "Meteorology and atmospheric science",
  "definition": "The range of wavelengths or frequencies of electromagnetic radiation emitted by a substance when its excited atoms or molecules return to a lower energy state. Each atmospheric gas has a unique emission spectrum, which allows scientists to identify and quantify its presence using spectroscopic instruments. For example, the emission spectrum of atomic oxygen contributes to the aurora.",
  "url": "https://mlchart.com/terminology/meteorology/emission-spectrum/"
}