History of Astronomy |
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... excentric. The line from the earth to the "excentric"wascalled thelineof apses.A circle having this centrewas called theequant,and he supposed that a radius drawnto the sun fromtheexcentric passesoverequal arcs on theequant in equal ...
... excentric. The line from the earth to the "excentric"wascalled thelineof apses.A circle having this centrewas called theequant,and he supposed that a radius drawnto the sun fromtheexcentric passesoverequal arcs on theequant in equal ...
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... excentric andequant of Hipparchus to explain the unequal motions ofthe sunandmoon. Headoptedthe epicyclesand deferents which had beenusedby Apollonius andothers to explain the retrograde motionsof the planets. We, who know thatthe earth ...
... excentric andequant of Hipparchus to explain the unequal motions ofthe sunandmoon. Headoptedthe epicyclesand deferents which had beenusedby Apollonius andothers to explain the retrograde motionsof the planets. We, who know thatthe earth ...
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... excentric of Hipparchus, asthe responses of these astronomers to the demand of Plato for uniform circular motions. Their use became more andmore confirmed, untilthe seventeenth century, whenthe accurate observations of Tycho Brahe ...
... excentric of Hipparchus, asthe responses of these astronomers to the demand of Plato for uniform circular motions. Their use became more andmore confirmed, untilthe seventeenth century, whenthe accurate observations of Tycho Brahe ...
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... excentric[3] from the centre of the deferent, andthe position oftheline of apses,[4] besides the inclinationand position ofthe plane of the planet's orbit.The only object ever aimed at in thosedays was to preparetables for predicting ...
... excentric[3] from the centre of the deferent, andthe position oftheline of apses,[4] besides the inclinationand position ofthe plane of the planet's orbit.The only object ever aimed at in thosedays was to preparetables for predicting ...
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... excentric andanepicycle foreach planet,and so bring theory stillcloserintoaccord with observation.And thishe proceeded todo.[6] Moreover, observershad found irregularities inthe moon's motion, due, aswenow know,to the disturbing ...
... excentric andanepicycle foreach planet,and so bring theory stillcloserintoaccord with observation.And thishe proceeded todo.[6] Moreover, observershad found irregularities inthe moon's motion, due, aswenow know,to the disturbing ...
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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 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