The elements of astronomy, physical and geometrical (1715)
Gregory, David, 1659-1708, Halley, Edmond, 1656-1742. Synopsis of the astronomy of comets, Adams, John, 1735-1826, former owner. BRL, Boston Public Library (John Adams Library) BRL · London : Printed for J. Nicholson ... and sold by J. Morphew ... · leaf 579
e of the Earth is ge-nerated. ^^E.F, If the Figure of the Earth were to be deter^mined after the manner above defcribed, ther^would be no need of meafuring the length of aPendulum ofcillating at the Pole P, in a giveafpace of time: For by obferving feveral fuchlengths in different Latitudes, the… … Book III^ i^/ A s T R o N o M tl 4 ^f a tnantier in different places^ as to make it per-form its ofcillations in the fame fpace of time: Itwill be fufficient to carry into the other places aPendulum fitted to one place, fo as that its feve-ral fingle ofcillations may anfwer a given fpace oftime,…
Astronomy
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