History of Astronomy |
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Page 6
... distances from the earth instead of having them stuck on the vault of heaven . was a transition from " flatland " to a space of three dimensions . sun . It Great progress was made when systematic observa- tions began , such as following ...
... distances from the earth instead of having them stuck on the vault of heaven . was a transition from " flatland " to a space of three dimensions . sun . It Great progress was made when systematic observa- tions began , such as following ...
Page 17
... distances from the earth , and their orbits , and the causes of their motions , he strongly objected to such a waste of valuable time . He dwelt on the contradictions and conflicting opinions of the physical philosophers , ...... and ...
... distances from the earth , and their orbits , and the causes of their motions , he strongly objected to such a waste of valuable time . He dwelt on the contradictions and conflicting opinions of the physical philosophers , ...... and ...
Page 18
... distance from the fixed earth . He called this point the excentric . The line from the earth to the excentric " was called the line of apses . A circle having this centre was called the equant , and he supposed that a radius drawn to ...
... distance from the fixed earth . He called this point the excentric . The line from the earth to the excentric " was called the line of apses . A circle having this centre was called the equant , and he supposed that a radius drawn to ...
Page 23
... distance of the excentric3 from the centre of the deferent , and the position of the 2 For definition see p . 22 . 3 For definition see p . 18 . 2 Ibid . I line of apses , besides the inclination and position THE GEOMETRICAL PERIOD 23 ...
... distance of the excentric3 from the centre of the deferent , and the position of the 2 For definition see p . 22 . 3 For definition see p . 18 . 2 Ibid . I line of apses , besides the inclination and position THE GEOMETRICAL PERIOD 23 ...
Page 28
... distance from the sun . The planets move in a similar way on epicycles , but their deferents have no geometrical or physical relation to the sun . The moon moves on an epicycle centred on a second epicycle , itself centred on a deferent ...
... distance from the sun . The planets move in a similar way on epicycles , but their deferents have no geometrical or physical relation to the sun . The moon moves on an epicycle centred on a second epicycle , itself centred on a deferent ...
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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