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Pressure Pressure is defined as the force exerted per unit area. The SI unit of pressure is the pascal or newton per square metre. Pressure is a similar idea to stress, the force intensity at a point, except that pressure means something acting on the surface of an object rather than within the material of the object. When discussing the pressure within a fluid, the meaning is equivalent to stress. The pressure in a liquid increases with depth. Conversions | 1 bar | = | 1x105 Pa | | 1 standard atmosphere (atm) | = | 1.01325x105 Pa | | 1 lbf in-2 (psi) | = | 6894.76 Pa | | 1 tonf in-2 | = | 15.4443x106 Pa | | 1 torr | = | 1 mmHg | | 1 mmHg | = | 133.322 Pa | | 1 inHg | = | 3386.39 Pa | | 1 inH2O | = | 249.089Pa | | 1 mmHg | = | 13.5951 mmH2O | | 1 mmH2O | = | 9.8066 Pa | | 1 kilo psi | = | 1 ksi | | 1 ksi | = | 1000 psi |
See also: Absolute Pressure, Acoustics, Atmospheric Pressure, Barye, Isobaric, Manometer, Pascal, Standard Atmosphere, Vacuum.
  
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