History of Astronomy |
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Page v
... UNIVERSAL GRAVI- TATION 8. NEWTON'S PAGE vii I 7 13 23 333 46 51 SUCCESSORS HALLEY , --- EULER , LA- 60 GRANGE , LAPLACE , ETC. 9. DISCOVERY OF NEW PLANETS HERSCHEL , PIAZZI , ADAMS , AND Le Verrier- 64 BOOK III . OBSERVATION IO ...
... UNIVERSAL GRAVI- TATION 8. NEWTON'S PAGE vii I 7 13 23 333 46 51 SUCCESSORS HALLEY , --- EULER , LA- 60 GRANGE , LAPLACE , ETC. 9. DISCOVERY OF NEW PLANETS HERSCHEL , PIAZZI , ADAMS , AND Le Verrier- 64 BOOK III . OBSERVATION IO ...
Page 5
... universal gravitation led to the conclusion that the inclination of the earth's equator to the plane of her orbit ( the obliquity of the ecliptic ) has been diminishing slowly since prehistoric times ; and this fact has been confirmed ...
... universal gravitation led to the conclusion that the inclination of the earth's equator to the plane of her orbit ( the obliquity of the ecliptic ) has been diminishing slowly since prehistoric times ; and this fact has been confirmed ...
Page 42
... universal gravitation . They are simply an alternative The ruled logarithmic paper we now use was not then to be had by going into a stationer's shop . Else he would have accom- plished this in five minutes . way of expressing that law ...
... universal gravitation . They are simply an alternative The ruled logarithmic paper we now use was not then to be had by going into a stationer's shop . Else he would have accom- plished this in five minutes . way of expressing that law ...
Page 44
... universal gravi- tation to magnetism , and speaks of the work of Gilbert of Col- chester . ( Gilbert's book , De Mundo Nostro Sublunari , Philo- sophia Nova , Amstelodami , 1651 , containing similar views , was published forty - eight ...
... universal gravi- tation to magnetism , and speaks of the work of Gilbert of Col- chester . ( Gilbert's book , De Mundo Nostro Sublunari , Philo- sophia Nova , Amstelodami , 1651 , containing similar views , was published forty - eight ...
Page 45
... universal gravitation . From that moment the idea of universal gravitation was in the air , and hints and guesses were thrown out by many ; and in time the law THE DYNAMICAL PERIOD 45.
... universal gravitation . From that moment the idea of universal gravitation was in the air , and hints and guesses were thrown out by many ; and in time the law THE DYNAMICAL PERIOD 45.
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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