History of Astronomy |
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Page vii
... measured by the increased habit of looking at facts from new points of view , as much as by the accumulation of facts . The mental capacity of one age does not seem to differ from that of other ages ; but it is the imagination of new ...
... measured by the increased habit of looking at facts from new points of view , as much as by the accumulation of facts . The mental capacity of one age does not seem to differ from that of other ages ; but it is the imagination of new ...
Page 18
... measured the inclination to the equator of the sun's apparent path in the heavens— i.e. , he measured the obliquity of the ecliptic , making it 23 ° 51 ' , confirming our knowledge of its continuous . diminution during historical times ...
... measured the inclination to the equator of the sun's apparent path in the heavens— i.e. , he measured the obliquity of the ecliptic , making it 23 ° 51 ' , confirming our knowledge of its continuous . diminution during historical times ...
Page 19
... measurements , and so discovered the acceleration of the moon's mean motion . This was conclusively estab- lished , but could not be explained by the Newtonian theory for quite a long time . ] He determined the plane of the moon's orbit ...
... measurements , and so discovered the acceleration of the moon's mean motion . This was conclusively estab- lished , but could not be explained by the Newtonian theory for quite a long time . ] He determined the plane of the moon's orbit ...
Page 35
... , 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 them , and many of his position - measurements were made by THE DYNAMICAL PERIOD 35.
... , 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 them , and many of his position - measurements were made by THE DYNAMICAL PERIOD 35.
Page 36
George Forbes. and many of his position - measurements were made by measuring the angular distances from known stars . Taking into consideration the absence of either a telescope or a clock , and reading his account of the labour he ...
George Forbes. and many of his position - measurements were made by measuring the angular distances from known stars . Taking into consideration the absence of either a telescope or a clock , and reading his account of the labour he ...
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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