Newton's Principia, sections I, II, III, with notes and illustrations. Also a collection of problems (1863)
Newton, Isaac, Sir, 1642-1727, Frost, Percival, 1817-1898 · Cambridge, London, Macmillan and Co · leaf 162
may, in what follows,employ the equable description of areas as a guide tothe center, about which all curvilinear motion in free spacetakes place. Illustration. 127. As an illustration of the last propositions and theircorollaries, we may state some of the observed facts in the motion PROP. III.… … 1. The areas described by the radii drawn from the Moonto the Earth are nearly proportional to the times of describing;hence the resultant force on the Moon tends nearly to E. 2. If ES the line joining the centers of the Earth and Sunmeets the Moons relative orbit about the Earth in A, C, andDEB be…
Mechanics · Celestial mechanics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-167-94.webp)
