Usage examples (19)

• The isentropic exponent g is a specific constant of a gas or a gas mixture and is defined as
• Some spontaneous macroscopic evolutions are reversible and isentropic, and an expanding radiation-dominated universe is one example.
• The only reasonable conclusion that respects the Second Law is that the expansion of a radiation-only universe is reversible and so isentropic in all phases.
• A technical process like an engine process involves losses. heat transfer and other irreversibilities and cannot therefore be described by the isentropic exponent g.