History of Astronomy |
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Page 6
... mass of facts translated from the original sculptures , papyri , and inscribed bricks , dating back thousands of years . In attempting to appraise the efforts of the beginners we must remember that it was natural to look upon the earth ...
... mass of facts translated from the original sculptures , papyri , and inscribed bricks , dating back thousands of years . In attempting to appraise the efforts of the beginners we must remember that it was natural to look upon the earth ...
Page 43
... mass of observations that are used , and the ingenuity of the propositions , contrast strongly with the loose and imperfectly supported explanations of all his predecessors ; and the indulgent reader will excuse the devotion of a few ...
... mass of observations that are used , and the ingenuity of the propositions , contrast strongly with the loose and imperfectly supported explanations of all his predecessors ; and the indulgent reader will excuse the devotion of a few ...
Page 44
... masses mutually attract- ing in such manner that the earth attracts a stone much more than a stone attracts the earth . 3. Bodies are attracted to the earth's centre , not because it is the centre of the universe , but 44 THE DYNAMICAL ...
... masses mutually attract- ing in such manner that the earth attracts a stone much more than a stone attracts the earth . 3. Bodies are attracted to the earth's centre , not because it is the centre of the universe , but 44 THE DYNAMICAL ...
Page 53
... masses . Having further proved the , for that day , wonderful proposition that , with the law of inverse squares ... mass were collected at the centre , he was able to express the meaning of Kepler's laws in propo- sitions which have ...
... masses . Having further proved the , for that day , wonderful proposition that , with the law of inverse squares ... mass were collected at the centre , he was able to express the meaning of Kepler's laws in propo- sitions which have ...
Page 56
... mass of the sun with the masses of those planets that have moons , and also to compare the mass of our moon with the mass of the earth . Thus Newton , after having established his great principle , devoted his splendid intellect to the ...
... mass of the sun with the masses of those planets that have moons , and also to compare the mass of our moon with the mass of the earth . Thus Newton , after having established his great principle , devoted his splendid intellect to the ...
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Common terms and phrases
accurate observations Airy astro Astronomer Royal Astronomia Nova astronomical units attraction axis bright calculations Cape Cassini catalogue centre century comet compute Copernicus diameter discovered discovery earth eclipse epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Laplace Lick Observatory light line of apses line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor method miles a second moon moon's nebulæ Newton Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil records refractor retrograde retrograde motion revolution revolve round ring rotation round the sun satellites seems showed Sirius solar system spectra spectroscope spectrum spots stellar sun-spots sun's surface supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith