History of Astronomy |
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Results 1-5 of 27
Page 16
... given illustrates the extraordinary deductive methods adopted by the ancient Greeks . But they went much farther in the same direction . They seem to have been in great difficulty to explain how the earth is supported , just as were ...
... given illustrates the extraordinary deductive methods adopted by the ancient Greeks . But they went much farther in the same direction . They seem to have been in great difficulty to explain how the earth is supported , just as were ...
Page 22
... given an annual motion in the secondary circle ( the epicycle ) , whose centre revolves round the earth on the primary circle ( the deferent ) , at a uniform rate round the excentric . Ptolemy supposed the centres of the epicycles of ...
... given an annual motion in the secondary circle ( the epicycle ) , whose centre revolves round the earth on the primary circle ( the deferent ) , at a uniform rate round the excentric . Ptolemy supposed the centres of the epicycles of ...
Page 27
... given on leaf 10 of his book ( the pages of this book are not all numbered , only alternate pages , or leaves ) . In his sixth book he discusses the inclination of the planetary orbits to the ecliptic . In regard to this the theory of ...
... given on leaf 10 of his book ( the pages of this book are not all numbered , only alternate pages , or leaves ) . In his sixth book he discusses the inclination of the planetary orbits to the ecliptic . In regard to this the theory of ...
Page 29
... given none , and could give none , " any more than Pythagoras or Aristarchus . There was nothing so startlingly simple in his system as to lead the cautious astronomer to accept it , as there was in the later Keplerian system ; and the ...
... given none , and could give none , " any more than Pythagoras or Aristarchus . There was nothing so startlingly simple in his system as to lead the cautious astronomer to accept it , as there was in the later Keplerian system ; and the ...
Page 43
... given some idea of it in a passage in his work on Harmonics , which is not now quoted , only lest someone might say it was egotistical - a term which is simply grotesque when applied to such a man with such a life's work accomplished ...
... given some idea of it in a passage in his work on Harmonics , which is not now quoted , only lest someone might say it was egotistical - a term which is simply grotesque when applied to such a man with such a life's work accomplished ...
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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