Frost point hygrometer

{
  "id": "MLC-T-CHM-004686",
  "term": "Frost point hygrometer",
  "field": "Chemistry",
  "definition": "An instrument used to measure the frost point temperature, which is the temperature at which water vapor in a gas sample will condense as ice. It operates by cooling a mirror surface until frost forms, then detecting this formation and maintaining the mirror at that temperature. This measurement provides a highly accurate determination of the absolute humidity of a gas.",
  "subject": "Chemistry and the Environment",
  "references": [
    "PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2195 (https://doi.org/10.1351/pac199062112167)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/frost-point-hygrometer/"
}