Contact angle

{
  "id": "MLC-T-CHM-002477",
  "term": "Contact angle",
  "field": "Chemistry",
  "definition": "The angle formed at the interface where a liquid, gas, and solid phase meet, measured within the liquid phase. This angle indicates the extent to which a liquid spreads on a solid surface, reflecting the balance of interfacial tensions. A contact angle below 90 degrees suggests good wetting, while an angle above 90 degrees indicates poor wetting.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "angle",
    "hysteresis",
    "substrate"
  ],
  "references": [
    "PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 598 (https://doi.org/10.1351/pac197231040577)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/contact-angle/"
}