farâravand-e vâgaštnâpazir (#)
Fr.: processus irréversible
A physical process in which the combined → entropy of the → system and the → environment increases. During an irreversible process the system is not in equilibrium at all instances of time. Most of the processes in nature are irreversible. → reversible process.
farâravand-e vâgaštpazir (#)
Fr.: processus réversible
Any physical process which can be performed in the reverse direction, the whole series of changes constituting the process being exactly reversed. → irreversible process.