PPT Slide

Pressure

We consider a system in a quantum state s of energy ?s. We assume that ?s depends on volume V (Example quantum particle closed in a 3d box)

We consider a quasi-static volume change: V--> V-dV

calculation of pressure (during the quasi-static and reversible process the total number of micro-states were kept constant--> entropy was kept constant)

for “isentropic” process:

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