History of Astronomy |
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... of astronomy of limited size, tofind a treatise on "practical" or on "theoreticalastronomy," noracomplete "descriptive astronomy," andstill lessa book on "speculative astronomy." Something ofeach ofthese is essential, however, for tracing ...
... of astronomy of limited size, tofind a treatise on "practical" or on "theoreticalastronomy," noracomplete "descriptive astronomy," andstill lessa book on "speculative astronomy." Something ofeach ofthese is essential, however, for tracing ...
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George Forbes. schoolboy of today, who is not allowed the luxury of learning the art of reasoning from him who still remains pre eminently its greatest exponent, Euclid. These students pity also the manoftomorrow, whois not tobe allowed ...
George Forbes. schoolboy of today, who is not allowed the luxury of learning the art of reasoning from him who still remains pre eminently its greatest exponent, Euclid. These students pity also the manoftomorrow, whois not tobe allowed ...
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... and Egyptians is but the remnant of a far more complete astronomy ofwhich no tracecan be found. Delambre, inhisHistoire del'Astronomie Ancienne (1817), ridiculesthe opinionofBailly, and considers that the progress madebyall ofthese ...
... and Egyptians is but the remnant of a far more complete astronomy ofwhich no tracecan be found. Delambre, inhisHistoire del'Astronomie Ancienne (1817), ridiculesthe opinionofBailly, and considers that the progress madebyall ofthese ...
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George Forbes. Saros of 223 lunations, or a little over eighteen years. The Metonic cycle is 235 lunations or nineteen years, after which period the sun and moon occupy the same position relative tothe stars. It isstillused for fixingthe ...
George Forbes. Saros of 223 lunations, or a little over eighteen years. The Metonic cycle is 235 lunations or nineteen years, after which period the sun and moon occupy the same position relative tothe stars. It isstillused for fixingthe ...
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George Forbes. The centres of the epicycles of Mars, Jupiter, and Saturn were supposed to be further away than the sun. Mercury and Venus were supposed to revolve in their epicycles in their own periodic timesand in the deferentround the ...
George Forbes. The centres of the epicycles of Mars, Jupiter, and Saturn were supposed to be further away than the sun. Mercury and Venus were supposed to revolve in their epicycles in their own periodic timesand in the deferentround the ...
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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