Contact angle

{
  "id": "MLC-T-MET-004627",
  "term": "Contact angle",
  "field": "Meteorology and atmospheric science",
  "definition": "The angle formed at the three-phase boundary where a liquid, gas, and solid intersect, measured within the liquid. In cloud physics, it describes the wettability of an atmospheric aerosol particle, which determines its effectiveness as a cloud condensation nucleus or ice nucleus. A smaller contact angle (less than 90 degrees) indicates better wettability and a higher propensity for the particle to initiate droplet or ice crystal formation.",
  "url": "https://mlchart.com/terminology/meteorology/contact-angle/"
}