History of Astronomy |
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... seems to dominate our present universe, as a rule for predicting the course ofevents,andas aguidetothe choiceof a ... seem to us absurd, let us be tolerant, and gratefully acknowledge that these astrologers, when they suggested such ...
... seems to dominate our present universe, as a rule for predicting the course ofevents,andas aguidetothe choiceof a ... seem to us absurd, let us be tolerant, and gratefully acknowledge that these astrologers, when they suggested such ...
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... seem to have divided the circle into 365 degrees.To learn the length ofthe year needed only patient observation—a characteristic of the Chinese; but many younger nations got into aterrible mess with their calendar from ignorance of the ...
... seem to have divided the circle into 365 degrees.To learn the length ofthe year needed only patient observation—a characteristic of the Chinese; but many younger nations got into aterrible mess with their calendar from ignorance of the ...
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... seems to move foratime ina retrograde direction. The attempts of Ptolemy andothers ofhis time to explain the retrograde motion in thisway wereonly approximate. Letus suppose each planet to have abar with one end centred at the earth. If ...
... seems to move foratime ina retrograde direction. The attempts of Ptolemy andothers ofhis time to explain the retrograde motion in thisway wereonly approximate. Letus suppose each planet to have abar with one end centred at the earth. If ...
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... seems to have discovered the moon's "variation." Meanwhile the Moors were leadersof science inthe west, and Arzachel of Toledo improved thesolartables verymuch. Ulugh Begh, grandson of the great Tamerlane the Tartar, built a fine ...
... seems to have discovered the moon's "variation." Meanwhile the Moors were leadersof science inthe west, and Arzachel of Toledo improved thesolartables verymuch. Ulugh Begh, grandson of the great Tamerlane the Tartar, built a fine ...
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... seem somuch brighter in opposition. ForMars would thenbea great deal nearer tothe earth than at other times. It wouldalso explain the retrograde motion of planets when in opposition. We must here notice thatat this stage Copernicus was ...
... seem somuch brighter in opposition. ForMars would thenbea great deal nearer tothe earth than at other times. It wouldalso explain the retrograde motion of planets when in opposition. We must here notice thatat this stage Copernicus was ...
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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