the class of components which are based on rotational motion
the speed at which the rotary part of the component rotates
(Forall (?Self ?Time) (<=> (Active ?Time Rotating-Component ?Self) (And (Rotating-Component ?Self) (Active ?Time Thermal-Component ?Self)))) (=> (Rotating-Component ?Self) (Quantity.Dimension (Rotating-Speed ?Self) Frequency-Dimension))