Changes

An '''irreversible process''' is a process for which it is impossible to return both the system and its surroundings to its original state by reversing the process.  For instance, a combustion engine transforms gasoline into engine exhaust and energy; however, no process can turn the engine exhaust and the energy transfered to the car cannot be transformed back into gasoline.  Irreversible processes generally involve an increase in [[entropy]].

An '''irreversible process''' is a process for which it is impossible to return both the system and its surroundings to its original state by reversing the process.  For instance, a combustion engine transforms gasoline into engine exhaust and energy; however, the engine exhaust and the energy transfered to the car cannot be transformed back into gasoline.  Irreversible processes generally involve an increase in [[entropy]].

Causes of irreversible processes include friction, unrestrained fluid expansion, heat transfer, and mixing.

Causes of irreversible processes include friction, unrestrained fluid expansion, heat transfer, and mixing.

[[category:physics]]

[[category:physics]]