History of Astronomy |
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Page 8
... appear that Fohi , the first emperor , reigned about 2952 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 ...
... appear that Fohi , the first emperor , reigned about 2952 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 ...
Page 20
... appears that 4,000 years ago - i.e . , about 2100 B. C. - an observer at the lower end of the passage would be able to see yDraconis , the then pole- star , at its lower culmination . It has been suggested that the passage was made for ...
... appears that 4,000 years ago - i.e . , about 2100 B. C. - an observer at the lower end of the passage would be able to see yDraconis , the then pole- star , at its lower culmination . It has been suggested that the passage was made for ...
Page 28
... appear to have any physical connexion with the planets as the centre of their motions . According to Copernicus ' sixth book , the planes of the planetary orbits do not pass through the sun , and the lines of apses do not pass through ...
... appear to have any physical connexion with the planets as the centre of their motions . According to Copernicus ' sixth book , the planes of the planetary orbits do not pass through the sun , and the lines of apses do not pass through ...
Page 36
... appear , and possibly that old ones may disappear , had upon him exactly the same effect that a similar occurrence had upon Hipparchus 1,700 years before . He felt it his duty to catalogue all the principal stars , so that there should ...
... appear , and possibly that old ones may disappear , had upon him exactly the same effect that a similar occurrence had upon Hipparchus 1,700 years before . He felt it his duty to catalogue all the principal stars , so that there should ...
Page 48
... appear at Rome , where he was charged with holding and teaching heretical opinions about the movement of the earth ; and he then solemnly abjured these opinions . There has been much exaggeration and misstatement about his trial and ...
... appear at Rome , where he was charged with holding and teaching heretical opinions about the movement of the earth ; and he then solemnly abjured these opinions . There has been much exaggeration and misstatement about his trial and ...
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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