. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. EDITORIAL SIR ISAAC NEWTON'S discovery of the Attraction of Gravita- tion was the inevitable Evolution of his research in centripetal forces, and the then opaque subject of the motions of the Moon connected with the tides of the ocean. In 1687 he published his Philosophia Naturalis Principia Mathe- matica and for years thereafter scientists generally, and astronomers in particular, combatted each other with acrimonions discussions pro and contra the forces of attraction, until Newton's dicta w
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. EDITORIAL SIR ISAAC NEWTON'S discovery of the Attraction of Gravita- tion was the inevitable Evolution of his research in centripetal forces, and the then opaque subject of the motions of the Moon connected with the tides of the ocean. In 1687 he published his Philosophia Naturalis Principia Mathe- matica and for years thereafter scientists generally, and astronomers in particular, combatted each other with acrimonions discussions pro and contra the forces of attraction, until Newton's dicta was proved scientifically orthodox in the catholic assent to the Procrustean law of the revolution of the planets in our system; for were this attrac- tion annihilated, not only our Sun, which undoubtedly is traveling in an inconceivably immense orbit around some huge central body, but all our planets and their satellites would fly off at a tangent and travel through all eternity in a straight path, like that wonderful Sun, Groombridge, 1830, rushing a-muck through space at the rate of 200 miles each second. Johann Kepler's Law of Gravitation—"Every particle of matter in the universe attracts every other particle with a force varying directly as the masses, and inversely as the square of their distances"; and the first of what are known as Kepler's Three Laws—"Every planet moves in an elliptical orbit, in one of the foci of which the Sun is situated," are the imperishable enactments which control in all investigations of that most ancient, most wonderful and most entrancing branch of the Sciences, Astronomy; and that universal genius, Shakespeare, enlists under the banner of Kepler when he says "But the strong base and building of my love Is the very center of the Earth Drawing all things to ;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
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