Difference between revisions of "Pressure"

Latest revision as of 17:49, July 13, 2016

Pressure is defined as the force per unit area exerted on a surface.^[1]

Imperial 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 â¢ m^â2. One atmosphere of pressure is equal to 101,325 Pa or 14.696 psi.

â Wile, Dr. Jay L. Exploring Creation With Chemistry. Apologia Educational Ministries, Inc. 1998

@@ Line 1: / Line 1: @@
-The force per unit area exerted on a surface.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref>
+'''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>
-The term ''atmosphere'' has sometimes been used by [[Chemistry|Chemists]] and [[Physics|Physicists]] as a unit of [[pressure]]. Example: one atmosphere of pressure is the pressure exerted on objects by the atmospheric [[gas]]ses, [[air]] (principally 21% [[oxygen]] and 79% [[nitrogen]]), at sea level of approximately 14.7 pounds per inch square.
+Imperial 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.
+==See also==
+*[[blood pressure]] - typically measured in millimeters of mercury
 ==References==
 <references/>
-[[category:physics]]
+[[Category:Physics]]