vapor pressure difference

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• Vapor pressure deficit — Vapor pressure deficit, in ecology, is the difference between the actual water vapor pressure and the saturation of water vapor pressure at a particular temperature. Unlike relative humidity, vapor pressure deficit has a simple nearly straight… …   Wikipedia

• Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …   Wikipedia

• Pressure vessel — Vertical pressure vessels installed in a structure A pressure vessel is a closed container designed to hold gases or liquids at a pressure substantially different from the ambient pressure. The pressure differential is dangerous and many fatal… …   Wikipedia

• pressure — 1. A stress or force acting in any direction against resistance. 2. (P, frequently followed by a subscript indicating location)In physics and physiology, the force per unit area exerted by a gas or liquid against the walls of its container or… …   Medical dictionary

• Pressure volume diagram — Thermodynamics …   Wikipedia

• Partial pressure — In a mixture of ideal gases, each gas has a partial pressure which is the pressure which the gas would have if it alone occupied the volume.[1] The total pressure of a gas mixture is the sum of the partial pressures of each individual gas in the… …   Wikipedia

• Hybrid Physical-Chemical Vapor Deposition — (HPCVD) is a thin film deposition technique that combines physical vapor deposition (PVD) with chemical vapor deposition (CVD). For the instance of magnesium diboride (MgB2) thin film growth, HPCVD process uses diborane (B2H6) as the boron… …   Wikipedia

• Chemical vapor deposition of ruthenium — is a method to deposit thin layers of ruthenium on substrate by Chemical vapor deposition (CVD). A unique challenge arises in trying to grow impurity free films of a catalyst in Chemical vapor deposition (CVD). Ruthenium metal activates C H and C …   Wikipedia

• Dynamic vapor sorption — (DVS) is a gravimetric technique that measures how quickly and how much of a solvent is absorbed by a sample: such as a dry powder absorbing water. It does this by varying the vapor concentration surrounding the sample and measuring the change in …   Wikipedia

• Atmospheric pressure — Air pressure redirects here. For the pressure of air in other systems, see pressure. Atmospheric pressure is the force per unit area exerted against a surface by the weight of air above that surface in the Earth s atmosphere. In most… …   Wikipedia

• Vapour Pressure Deficit — Vapour Pressure Deficit, or VPD , is the difference (deficit) between the amount of moisture in the air and how much moisture the air can hold when it is saturated. Once air becomes saturated water will condense out to form clouds, dew or films… …   Wikipedia