Surface Pressure


surface pressure

[′sər·fəs ‚presh·ər] (meteorology) The atmospheric pressure at a given location on the earth's surface; the expression is applied loosely and about equally to the more specific terms: station pressure and sea-level pressure. (physics) film pressure

Surface Pressure

 

a force acting on a unit of length of the barrier separating the pure surface of a liquid and the surface of the same liquid covered with an adsorption layer of a surfactant. Surface pressure has a molecular kinetic nature; it is directed toward the pure surface and is determined by the difference in surface tensions of the pure liquid and of the liquid with an adsorption monolayer.