Pressure
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The force per unit area exerted on a surface.[1]
English units used for air pressure include:
- pounds per square inch
- inches of of mercury
See also
- blood pressure - measured in millimeters of mercury
The term atmosphere has sometimes been used by Chemists and Physicists as a unit of pressure. Example: one atmosphere of pressure is the pressure exerted on objects by the atmospheric gasses, air (principally 21% oxygen and 79% nitrogen), at sea level of approximately 14.7 pounds per inch square.
References
- ↑ Wile, Dr. Jay L. Exploring Creation With Chemistry. Apologia Educational Ministries, Inc. 1998