History of Astronomy |
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Page 7
... comparing the chronologies of ancient races is to fix the actual dates of observations recorded , and this is not a part of a history of astronomy . In conclusion , let us bear in mind the limited point of view of the ancients when we ...
... comparing the chronologies of ancient races is to fix the actual dates of observations recorded , and this is not a part of a history of astronomy . In conclusion , let us bear in mind the limited point of view of the ancients when we ...
Page 19
... compared this value with his own . measurements , and so discovered the acceleration of the moon's mean motion ... comparing his star positions with those of Timocharis and Aristillus he found no stars that had appeared or disappeared in ...
... compared this value with his own . measurements , and so discovered the acceleration of the moon's mean motion ... comparing his star positions with those of Timocharis and Aristillus he found no stars that had appeared or disappeared in ...
Page 35
... compared with the best modern catalogues , his probable error in right ascension is only 24 " , 1 , and in declination only 25 " , 9 . ness . Clocks of a sort had been made , but Tycho Brahe found them so unreliable that he seldom used ...
... compared with the best modern catalogues , his probable error in right ascension is only 24 " , 1 , and in declination only 25 " , 9 . ness . Clocks of a sort had been made , but Tycho Brahe found them so unreliable that he seldom used ...
Page 42
... compared by him with observation . These were the Ptolemaic , the Copernican , and the Tychonic . The two latter ... comparing observations of Mars , of all dates , with his theory . His first law states that the planets describe ...
... compared by him with observation . These were the Ptolemaic , the Copernican , and the Tychonic . The two latter ... comparing observations of Mars , of all dates , with his theory . His first law states that the planets describe ...
Page 44
... compared with the sun , SE , M . So all the angles of the triangle SEM in any of these positions of E are known , and also the ratios of SE ,, SE ,, SE ,, SE , to SM and to each other . For the orbit of Mars observations were chosen at ...
... compared with the sun , SE , M . So all the angles of the triangle SEM in any of these positions of E are known , and also the ratios of SE ,, SE ,, SE ,, SE , to SM and to each other . For the orbit of Mars observations were chosen at ...
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Common terms and phrases
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