Hot-film anemometer

{
  "id": "MLC-T-MET-006282",
  "term": "Hot-film anemometer",
  "field": "Meteorology and atmospheric science",
  "definition": "An instrument used to measure fluid velocity, particularly in turbulent flows, by sensing the heat loss from a heated element. It consists of a thin, electrically heated conductive film deposited on a non-conducting substrate, such as a quartz rod. The electrical power required to maintain the film at a constant temperature above the fluid temperature is nonlinearly related to the flow speed, following King's law.",
  "url": "https://mlchart.com/terminology/meteorology/hot-film-anemometer/"
}