History of Astronomy |
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Page viii
... astronomer this feebleness of the human intellect , and no one is more conscious of the limitations of the logical ... astronomers , refusing to accept mere hypotheses as true , have founded upon these discoveries a science as exact in ...
... astronomer this feebleness of the human intellect , and no one is more conscious of the limitations of the logical ... astronomers , refusing to accept mere hypotheses as true , have founded upon these discoveries a science as exact in ...
Page ix
... astronomers of to - day cannot be included among the records of the History of Astronomy . The writer regrets the necessity that thus arises of leaving without mention the names of many who are now making history in astronomical work ...
... astronomers of to - day cannot be included among the records of the History of Astronomy . The writer regrets the necessity that thus arises of leaving without mention the names of many who are now making history in astronomical work ...
Page 3
... astronomer and astrologer alike the deepest gratitude for their diligence in recording astro- nomical events . For , out of the scanty records which have survived the destructive acts of fire and flood , of monarchs and mobs , we have ...
... astronomer and astrologer alike the deepest gratitude for their diligence in recording astro- nomical events . For , out of the scanty records which have survived the destructive acts of fire and flood , of monarchs and mobs , we have ...
Page 6
... astronomers did ) as a circular plane , surrounded and bounded by the heaven , which was a solid vault , or hemisphere , with its concavity turned downwards . The stars seemed to be fixed on this vault ; the moon , and later the planets ...
... astronomers did ) as a circular plane , surrounded and bounded by the heaven , which was a solid vault , or hemisphere , with its concavity turned downwards . The stars seemed to be fixed on this vault ; the moon , and later the planets ...
Page 9
... astronomers to determine the positions of the solstices and equinoxes , and they reported the names of the stars in the places occupied by the sun at these seasons , and in 2285 B. C. he gave them further orders . If this account be ...
... astronomers to determine the positions of the solstices and equinoxes , and they reported the names of the stars in the places occupied by the sun at these seasons , and in 2285 B. C. he gave them further orders . If this account be ...
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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