For 10 points, name this ideal thermodynamic cycle consisting of alternating isothermal and isentropic or adiabatic steps; a cycle named for a French engineer.
Clausius found that this process satisfied the equality of his namesake inequality, i.e. the integral of d Q over T around it is zero. Introduced in On the Motive Power of Fire, this process forms a rectangle in T-S coordinates and is thus fully reversible. Its namesake is also the namesake of a form of the second law of thermodynamics stating that no two-reservoir heat cycle can have efficiency greater than one minus the reservoir absolute temperature ratio; that efficiency is this thermodynamic cycle's efficiency. For 10 points, name this ideal thermodynamic cycle consisting of alternating isothermal and isentropic or adiabatic steps; a cycle named for a French engineer.
Clausius found that this process satisfied the equality of his namesake inequality, i.e. the integral of d Q over T around it is zero.
the {Carnot} cycle