Any line cuts off equal distances between the curve and the asymptotes.
This pumping action results in an extremely rapid circulation of the heating agent, enabling long distances to be traversed without much loss of heat.
Tiyan's lands were shallow but extended for great distances along the coast.
An important property is: the difference of the focal distances of any point on the curve equals the transverse axis.
The problem, however, of constructing a deep-sea cable satisfactorily, with suitable inductance coils inserted at short distances apart, is a difficult one, and one which it cannot be said has been solved.