Frost point hygrometer

{
  "id": "MLC-T-MET-005833",
  "term": "Frost point hygrometer",
  "field": "Meteorology and atmospheric science",
  "definition": "An instrument used to measure the frost point, which is the temperature at which air becomes saturated with respect to ice. It operates by cooling a mirror surface until frost forms, then precisely measuring the mirror's temperature. This method provides a highly accurate determination of atmospheric moisture content, especially at very low temperatures.",
  "url": "https://mlchart.com/terminology/meteorology/frost-point-hygrometer/"
}