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Re: [Phys-l] PV question

Bernard Cleyet wrote:

A PID controller with a heater or cooler of a single reservoir won't do?

John Mallinckrodt wrote:

(e.g., an isobaric or isochoric process), you will need a large number (technically, an infinite number) of reservoirs at different temperatures.

That could work to perform a reasonable approximation of a quasi- static process on the gas, but it wouldn't constitute even an attempt to perform a reversible process because heaters and coolers generate entropy by design.

John Mallinckrodt
Cal Poly Pomona