Difference between revisions of "Pressure"
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| − | + | '''Pressure''' is defined as the [[force]] per unit [[area]] exerted on a surface.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> | |
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| − | + | English units used for air pressure include: | |
| − | + | *[[atmosphere]]s | |
| − | + | *pounds per square inch (PSI) | |
| − | + | *inches of mercury, which is the number of inches the given pressure will raise a column of [[mercury (element) | mercury]] | |
| − | + | The SI unit for pressure is the pascal (Pa), where 1 Pa = 1 N • m<sup>-2</sup>. One atmosphere of pressure is equal to 101,325 Pa or 14.696 psi. | |
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| − | + | ==See also== | |
| − | + | *[[blood pressure]] - typically measured in millimeters of mercury | |
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| − | + | ==References== | |
| − | + | <references/> | |
| − | + | [[category:physics]] | |
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Revision as of 01:18, August 10, 2010
Pressure is defined as the force per unit area exerted on a surface.[1]
English units used for air pressure include:
- atmospheres
- pounds per square inch (PSI)
- inches of mercury, which is the number of inches the given pressure will raise a column of mercury
The SI unit for pressure is the pascal (Pa), where 1 Pa = 1 N • m-2. One atmosphere of pressure is equal to 101,325 Pa or 14.696 psi.
See also
- blood pressure - typically measured in millimeters of mercury
References
- ↑ Wile, Dr. Jay L. Exploring Creation With Chemistry. Apologia Educational Ministries, Inc. 1998