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Page viii
... gravitation ( A ) . No one recognises more than the mathe- matical astronomer this feebleness of the human intellect , and no one is more conscious of the limitations of the logical process called mathematics , which even now has not ...
... gravitation ( A ) . No one recognises more than the mathe- matical astronomer this feebleness of the human intellect , and no one is more conscious of the limitations of the logical process called mathematics , which even now has not ...
Page 5
... 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 by Egyptian ...
... 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 by Egyptian ...
Page 42
... 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 in dealing ...
... 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 in dealing ...
Page 44
... gravitation acting through the void space . M He compared 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 ...
... gravitation acting through the void space . M He compared 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 ...
Page 45
... 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.
... 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