<Dl> <Dd> q C q H = f (T H, T C) = T C T H . (3). (\ displaystyle (\ frac (q_ (C)) (q_ (H))) = f (T_ (H), T_ (C)) = (\ frac (T_ (C)) (T_ (H))). \ qquad (3).) </Dd> </Dl> <Dd> q C q H = f (T H, T C) = T C T H . (3). (\ displaystyle (\ frac (q_ (C)) (q_ (H))) = f (T_ (H), T_ (C)) = (\ frac (T_ (C)) (T_ (H))). \ qquad (3).) </Dd> <P> Substituting Equation 3 back into Equation 1 gives a relationship for the efficiency in terms of temperature: </P> <Dl> <Dd> η = 1 − q C q H = 1 − T C T H (4). (\ displaystyle \ eta = 1 - (\ frac (q_ (C)) (q_ (H))) = 1 - (\ frac (T_ (C)) (T_ (H))) \ qquad (4).) </Dd> </Dl>

What is an absolute scale of temperature show that this scale agrees with the ideal gas scale