The pressure above zero pressure, equal to gauge pressure plus atmospheric pressure. |
Related Terms |
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Pressure
The force exerted by a liquid or gas on a unit area. Three pressures may be involved: gauge pressure, the unit pressure above atmospheric pressure; absolute pressure, gauge pressure plus the atmospheric pressure; vacuum pressure; the pressure below atmospheric pressure usually expressed in inches of Hg. |
GAUGE PRESSURE
The pressure above that of atmospheric, 14.7 psi at sea level; absolute pressure minus 14.7 at sea level. |
BAROMETRIC PRESSURE
Atmospheric pressure as determined by a barometer usually expressed in inches of mercury. |
ALTIMETER SETTING
The value of atmospheric pressure to which the scale of an aneroid altimeter is set. |
FAHRENHEIT TEMPERATURE
Temperature based on a scale in which, under standard atmospheric pressure |
CYCLONE
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VACUUM PUM
Low-pressure air compressor that takes suction from a region below atmospheric pressure (turbine condenser) and discharge into the atmosphere. |
PRESSURE GAGE
Pressure differential above or below atmospheric pressure. |
PRESSURE GRADIENT
A measure of the rate of change in atmospheric pressure with distance. The closer the isobars are together, the higher the pressure gradient is and the stronger the winds will be. |
VARDAR
A cold fall wind blowing from the northwest down the Vardar valley in Greece to the Gulf of Salonica. It occurs when atmospheric pressure over eastern Europe is higher than over the Aegean Sea, as is often the case in winter. Also called VARDARAC. |