# How to know heat flows out or in from a $pV$ diagram? [closed]

How to know heat flows out or in from $$pV$$ diagram?

## closed as unclear what you're asking by AccidentalFourierTransform, Cosmas Zachos, user191954, Wolphram jonny, Jon CusterOct 30 '18 at 13:03

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Let's say, we are looking at a PV diagram of some gas with a known adiabatic index, $$\gamma$$. All adiabatic curves of this gas will be described by the following equation: $$PV^\gamma=constant$$.