History of Astronomy |
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Page viii
... sphere . It has been necessary to curtail many parts of the History in the attempt - perhaps a hopeless one - to lay before the reader in a limited space enough about each age to illus- trate its tone and spirit , the ideals of the ...
... sphere . It has been necessary to curtail many parts of the History in the attempt - perhaps a hopeless one - to lay before the reader in a limited space enough about each age to illus- trate its tone and spirit , the ideals of the ...
Page 6
... sphere carrying the sun too . It must have been difficult to believe that at midday the stars are shining as ... spherical , and to ascribe the diurnal motions to its rotation . Probably the greatest step ever made in astronomical theory ...
... sphere carrying the sun too . It must have been difficult to believe that at midday the stars are shining as ... spherical , and to ascribe the diurnal motions to its rotation . Probably the greatest step ever made in astronomical theory ...
Page 8
... B.C. , and shortly afterwards Yu - Chi made a sphere to represent the motions of the celestial bodies . It is also mentioned , in the book called Chu- King , supposed to have been written in 2205 B.C. 8 THE GEOMETRICAL PERIOD 20.
... B.C. , and shortly afterwards Yu - Chi made a sphere to represent the motions of the celestial bodies . It is also mentioned , in the book called Chu- King , supposed to have been written in 2205 B.C. 8 THE GEOMETRICAL PERIOD 20.
Page 9
... sphere was made in the time of Yao ( 2357 B.C . ) . 1 It is said that the Emperor Chueni ( 2513 B.C. ) saw five planets in conjunction the same day that the sun and moon were in conjunction . This is discussed by Father Martin ( MSS ...
... sphere was made in the time of Yao ( 2357 B.C . ) . 1 It is said that the Emperor Chueni ( 2513 B.C. ) saw five planets in conjunction the same day that the sun and moon were in conjunction . This is discussed by Father Martin ( MSS ...
Page 14
... sphere . Pythagoras ( 569-470 B.C. ) visited Egypt to study science . He deduced his system , in which the earth revolves in an orbit , from fantastic first principles , of which the following are examples : " The circular motion is the ...
... sphere . Pythagoras ( 569-470 B.C. ) visited Egypt to study science . He deduced his system , in which the earth revolves in an orbit , from fantastic first principles , of which the following are examples : " The circular motion is the ...
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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