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== [[File:PV.png|70px]] Add on : PV (pressure volume) diagram == | == [[File:PV.png|70px]] Add on : PV (pressure volume) diagram == | ||
A pressure–volume diagram (or PV diagram, or volume–pressure loop is used to describe corresponding changes in volume and pressure in a system. | A [https://en.wikipedia.org/wiki/Pressure%E2%80%93volume_diagram pressure–volume diagram] (or PV diagram, or volume–pressure loop is used to describe corresponding changes in volume and pressure in a system. | ||