History of Astronomy |
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... centre of the world. Nicetas,Heraclides, and Ecphantes supposed theearth to revolve onits axis, butto havenoorbital motion. The short epitome so far givenillustrates the extraordinarydeductive methodsadopted bytheancient Greeks. But ...
... centre of the world. Nicetas,Heraclides, and Ecphantes supposed theearth to revolve onits axis, butto havenoorbital motion. The short epitome so far givenillustrates the extraordinarydeductive methodsadopted bytheancient Greeks. But ...
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... centre of the universe. He adopted the excentric andequant of Hipparchus to explain the unequal motions ofthe ... centres of the epicycles of Mercuryand Venusto be ona bar passing through thesun, and to bebetween the earth and the sun ...
... centre of the universe. He adopted the excentric andequant of Hipparchus to explain the unequal motions ofthe ... centres of the epicycles of Mercuryand Venusto be ona bar passing through thesun, and to bebetween the earth and the sun ...
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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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... centre ofintellectual progress, that centre migrated to Baghdad, and the Arabs became the leaders of scienceand philosophy.In astronomy they made careful observations.Inthe middleof theninth century Albategnius, a Syrianprince ...
... centre ofintellectual progress, that centre migrated to Baghdad, and the Arabs became the leaders of scienceand philosophy.In astronomy they made careful observations.Inthe middleof theninth century Albategnius, a Syrianprince ...
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... centre. But Copernicus remarked that he could alsouse an epicycle forthispurpose, or that he could useboth an excentric andanepicycle foreach planet,and so bring theory stillcloserintoaccord with observation.And thishe proceeded todo.[6] ...
... centre. But Copernicus remarked that he could alsouse an epicycle forthispurpose, or that he could useboth an excentric andanepicycle foreach planet,and so bring theory stillcloserintoaccord with observation.And thishe proceeded todo.[6] ...
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Airy allthe andthat andthe asthe Astronomer Royal Astronomia Nova astronomical units atmosphere atthe attraction axis bright bythe calculations catalogue centre century Chaldæans 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 sunÂspot supposed surface telescope terrestrial thatthe theearth themoon theory thesame thesolar thesun tobe tothe Tycho Brahe Uranus velocity Venus Verrier William Herschel withthe zenith