History of Astronomy |
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... All that mathematics can do is to assureus that a statementAis equivalent tostatements B,C,D,or is one of thefacts expressed by thestatements B,C,D;so that we may know,if B,C, and D aretrue,then Aistrue. To many peopleour inability to ...
... All that mathematics can do is to assureus that a statementAis equivalent tostatements B,C,D,or is one of thefacts expressed by thestatements B,C,D;so that we may know,if B,C, and D aretrue,then Aistrue. To many peopleour inability to ...
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... all the sciences, refuse to invite othersto join them in vain speculation.Thewriter has, therefore, in this short History, tried to followthatgreat master, Airy, whose pupil he was, and the keytowhose characterwas exactness and accuracy ...
... all the sciences, refuse to invite othersto join them in vain speculation.Thewriter has, therefore, in this short History, tried to followthatgreat master, Airy, whose pupil he was, and the keytowhose characterwas exactness and accuracy ...
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... remember thatitwas natural to look upon the earth (as all the first astronomers did)asacircular plane, surrounded and boundedby theheaven, whichwas asolidvault, or hemisphere, with its concavity turned downwards. The stars seemed to.
... remember thatitwas natural to look upon the earth (as all the first astronomers did)asacircular plane, surrounded and boundedby theheaven, whichwas asolidvault, or hemisphere, with its concavity turned downwards. The stars seemed to.
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... all nations required tohave a calendar. The solar year, the lunar month, and the day were the units, and itis owing to their incommensurability thatwe find so manycalendars proposedand in useat different times. The only object to be ...
... all nations required tohave a calendar. The solar year, the lunar month, and the day were the units, and itis owing to their incommensurability thatwe find so manycalendars proposedand in useat different times. The only object to be ...
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... all weknow of the astronomical learningofthe Chinese, Indians, Chaldĉans, Assyrians, and Egyptians is but the remnant of a far more complete astronomy ofwhich no tracecan be found. Delambre, inhisHistoire del'Astronomie Ancienne (1817) ...
... all weknow of the astronomical learningofthe Chinese, Indians, Chaldĉans, Assyrians, and Egyptians is but the remnant of a far more complete astronomy ofwhich no tracecan be found. Delambre, inhisHistoire del'Astronomie Ancienne (1817) ...
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Common terms and phrases
Airy allthe andthat andthe asthe Astronomer Royal Astronomia Nova astronomical units atmosphere atthe attraction axis bright bythe calculations catalogue centre century Chaldĉans Chinese comet confirmed Copernicus detected diameter discovered discovery distance earth eclipse epicycles equatoreal excentric explain fixed stars FOOTNOTES Frauenhofer fromthe Galileo Greenwich Halley havebeen heavenly bodies heavens heliometer Herschel Hipparchus Huggins hydrogen hypotheses inequality instruments inthe isthe John Herschel Jupiter Jupiter's Kepler lawof Lick Observatory light lines lunar Mars mathematical mean motion measured Mercury meteor miles moon moon's nebula Newton ofthese onthe orbit parallax perihelion period photographic physical planet planetary position predicted proper motion Ptolemy records reflector refractor retrograde retrograde motion revolve rotation round satellites Saturn seems solar system spectra spectroscope spectrum spots stellar sun's sunspot supposed surface telescope terrestrial thatthe theearth themoon theory thesame thesolar thesun tobe tothe Tycho Brahe Uranus velocity Venus Verrier William Herschel withthe zenith