Reversible Process
An idealized thermodynamic process that can be reversed by infinitesimal changes in system variables without leaving any net trace on surroundings.
Governing formula
dS_universe = 0
SI unit
N/A
In depth
Reversible processes proceed quasi-statically through continuous equilibrium states without dissipative friction, turbulence, or finite temperature gradients.
Examples in the real world
Infinitely slow compression of a gas in a frictionless piston maintained in exact thermal equilibrium with a heat reservoir.