History of Astronomy |
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Page 18
... computed tables for predicting the place of the sun . 66 He proceeded in the same way to compute Lunar tables . Making use of Chaldæan eclipses , he was able to get an accurate value of the moon's mean motion 18 THE GEOMETRICAL PERIOD.
... computed tables for predicting the place of the sun . 66 He proceeded in the same way to compute Lunar tables . Making use of Chaldæan eclipses , he was able to get an accurate value of the moon's mean motion 18 THE GEOMETRICAL PERIOD.
Page 28
... compute tables from which the places of the planets among the stars can be predicted.1 He " Est enim Astronomi proprium , historiam motuum cœlestium diligenti et artificiosa observatione colligere . Deinde causas earundem , seu ...
... compute tables from which the places of the planets among the stars can be predicted.1 He " Est enim Astronomi proprium , historiam motuum cœlestium diligenti et artificiosa observatione colligere . Deinde causas earundem , seu ...
Page 60
... compute a lunar eclipse observed in Babylon 721 B.C. , another at Alexandria 201 B.C. , a solar eclipse observed by Theon 360 A.D. , and two later ones up to the tenth century . He found that to explain these eclipses Halley's sug ...
... compute a lunar eclipse observed in Babylon 721 B.C. , another at Alexandria 201 B.C. , a solar eclipse observed by Theon 360 A.D. , and two later ones up to the tenth century . He found that to explain these eclipses Halley's sug ...
Page 61
... computed the amount at 10 " in one century , agreeing with observation . ( Later on Adams showed that Laplace's calculation was wrong , and that the value he found was too large ; so , part of the acceleration is now attributed by some ...
... computed the amount at 10 " in one century , agreeing with observation . ( Later on Adams showed that Laplace's calculation was wrong , and that the value he found was too large ; so , part of the acceleration is now attributed by some ...
Page 62
... computed their parabolic orbits by the rules laid down by Newton . His_object_ was to find out if any of them really travelled in elongated- I ellipses , practically undistinguishable , in the visible part of their paths , from parabolæ ...
... computed their parabolic orbits by the rules laid down by Newton . His_object_ was to find out if any of them really travelled in elongated- I ellipses , practically undistinguishable , in the visible part of their paths , from parabolæ ...
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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