Reference Terms
from Wikipedia, the free encyclopedia


Pressure (symbol: p) is the force per unit area acting on a surface in a direction perpendicular to that surface.

Pressure is transmitted to solid boundaries or across arbitrary sections of fluid normal to these boundaries or sections at every point.

It is a fundamental parameter in thermodynamics and it is conjugate to volume.

Note:   The above text is excerpted from the Wikipedia article "Pressure", which has been released under the GNU Free Documentation License.
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