Surface Pressure

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surface pressure

[′sər·fəs ‚presh·ər]
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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
During a fixed mission, the aircraft collects weather data such as temperature, wind speed, wind direction, humidity and surface pressure. Aircrews fly through the eye of a storm four to six times to locate the low-pressure center and circulation of the storm.
NCM added that weak pressure distributions with an extension of high surface pressure from the west, weather will be stable in general during the next few days.
Surface pressure charts showed low pressure system and temperature in Al Ain was bit high which indicated formation of convective clouds.
The maximum surface winds and minimum surface pressure of the hurricane at this time were estimated at 160 kt and 909 mb, respectively.
The material is designed for balance with mechanical properties in mind, anticipating a maximum of 5 MPa of surface pressure which typically occurs in practical conditions, but also reducing noise at even higher surface pressures.
Carbon dioxide frozen on the winter polar cap evaporates, thickening the atmosphere and increasing the surface pressure. This enhances the process by helping suspend the dust particles in the air.
Even as the winds on Pluto reach maximum speeds of 30 to 40 kilometers an hour, they are sufficient, given the low surface pressure (100,000 times less than Earth) and weak gravity, for the dunes to form.
There is a decrease in surface pressure as the MODIMP content in the monolayer increases, indicating a decreased stability of the mixed monolayer.
The Langmuir films and Langmuir-Blodgett Films were accomplished using the Langmuir trough with a surface of 200 x 310 [mm.sup.2] (JML04C3, power each Ltd., China) and equipped with surface pressure measurement, Langmuir-Blodgett film deposition.

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