View source for Absolute pressure

[[Category:Done 2020-02-29]] 
[[File:Pressure.png|400px|thumbnail|right|Figure 1: Possible pressure measurements of a system.]]
<onlyinclude>'''Absolute pressure''' is the measure of [[pressure]] with respect to ''absolute zero pressure'', which is the pressure of a perfect [[vacuum]].</onlyinclude><ref>Physics for Scientists and Engineers by Randall Knight, 4the edition pg 365. Published by Pearson, 2017.</ref> The absolute pressure measurement is required for the [[ideal gas law]] in the same sense that [[temperature]] must be represented by its absolute unit, the [[Kelvin]]. 

Many pressure measurements on Earth, like [[tire pressure]] subtract off the pressure from the [[atmosphere]], which is a [[gauge pressure]]. This can confuse matters because this pressure is also measured in the same units. Absolute pressure is given by the gauge pressure plus [[atm|atmospheric pressure]] for measurements on Earth. 


==For Further Reading==
*[[Psig]]
*[[Pressure]]
*[[Atmosphere]]
*[[PV diagram]]
*[[Gauge pressure]]
*[[Energy conversion technology]]
*Or explore a [[Special:Random|random page]]

==References==
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