<Dl> <Dd> Efficiency = w c y q H = q H − q C q H = 1 − q C q H (1) (\ displaystyle (\ textrm (Efficiency)) = (\ frac (w_ (cy)) (q_ (H))) = (\ frac (q_ (H) - q_ (C)) (q_ (H))) = 1 - (\ frac (q_ (C)) (q_ (H))) \ qquad (1)) </Dd> </Dl> <Dd> Efficiency = w c y q H = q H − q C q H = 1 − q C q H (1) (\ displaystyle (\ textrm (Efficiency)) = (\ frac (w_ (cy)) (q_ (H))) = (\ frac (q_ (H) - q_ (C)) (q_ (H))) = 1 - (\ frac (q_ (C)) (q_ (H))) \ qquad (1)) </Dd> <P> where w is the work done per cycle . Thus the efficiency depends only on q / q . </P> <P> Carnot's theorem states that all reversible engines operating between the same heat reservoirs are equally efficient . Thus, any reversible heat engine operating between temperatures T and T must have the same efficiency, that is to say, the efficiency is the function of only temperatures </P>

The motion of particles that contribute to temperature are