If the attraction of the sun for the огпtre of the earth, and of the hemisphere diametrically opposite to him, were diminished by a difficulty in penetrating the interposed matter, the tides would be more obviously affected. Its attraction is the same... Mechanism of the Heavens - Page lxixby Mary Somerville - 1831 - 621 pagesFull view
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Kathryn A. Neeley, Mary Somerville - 2001 - 284 pages
...are obedient to permanent laws." (Ixix) This constancy does not preclude new discoveries, however: "Perhaps the day may come when even gravitation, no...embracing every law that regulates the material world." (Ixix) The most convincing single proof of this unity is the pervasiveness of gravity, "that extraordinary...