History of Astronomy |
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Page 17
... fixed the positions of the zodiacal stars , near to which all the planets in their orbits pass , thus facilitating the determination of planetary motions . Aristarchus ( 320-250 B.C. ) showed that THE GEOMETRICAL PERIOD 17.
... fixed the positions of the zodiacal stars , near to which all the planets in their orbits pass , thus facilitating the determination of planetary motions . Aristarchus ( 320-250 B.C. ) showed that THE GEOMETRICAL PERIOD 17.
Page 18
George Forbes. planetary motions . Aristarchus ( 320-250 B.C. ) showed that the sun must be at least nineteen times as far off as the moon , which is far short of the mark . He also found the sun's diameter , correctly , to be half a ...
George Forbes. planetary motions . Aristarchus ( 320-250 B.C. ) showed that the sun must be at least nineteen times as far off as the moon , which is far short of the mark . He also found the sun's diameter , correctly , to be half a ...
Page 37
... showed more new inequali- ties . But , as it turned out , the most fruitful work of Tycho Brahe was on the motions of the planets , and especially of the planet Mars , for it was by an examination of these results that Kepler was led to ...
... showed more new inequali- ties . But , as it turned out , the most fruitful work of Tycho Brahe was on the motions of the planets , and especially of the planet Mars , for it was by an examination of these results that Kepler was led to ...
Page 52
... showed it to his audience . next morning , when removing his property from the lecture table , he found that his precious relic had been stolen . It would be interesting to know who has got it now ! The Having developed and enunciated ...
... showed it to his audience . next morning , when removing his property from the lecture table , he found that his precious relic had been stolen . It would be interesting to know who has got it now ! The Having developed and enunciated ...
Page 56
... For a long time this was the one weak point in the Newtonian theory . It was not till 1747 that Clairaut reconciled this with the theory , and showed why Newton's exact . calculation was not Newton 56 THE DYNAMICAL PERIOD.
... For a long time this was the one weak point in the Newtonian theory . It was not till 1747 that Clairaut reconciled this with the theory , and showed why Newton's exact . calculation was not Newton 56 THE DYNAMICAL PERIOD.
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accepted accurate ancient appear astronomers attraction bodies bright calculations called catalogue cause centre century Chinese circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect elements enabled epicycles equal error explain fact fixed follow force four Galileo gave give given gravitation heavens held Herschel increased interesting Jupiter Kepler knowledge known later LIBRARIES light lunar Mars mass mathematical mean measured method miles moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planet planetary pole position predicted progress proper motion proved records researches revolve ring rotation round Royal satellites seems seen showed SIGILLUM solar system spectroscope spectrum stars studied sun's supposed surface tables telescope theory tion trace true Tycho Brahe UNIVERSITY VERITAS