equilibrium film

A liquid @[email protected] of thickness, or thicknesses, at which it is @[email protected] or @[email protected] with respect to small thickness changes. Unless the area of the @[email protected] is small, its composition may not be the same over its area and the (@[email protected]) equilibrium thickness may be characteristic of the local condition only.
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 614 [Terms] [Paper]