History of Astronomy |
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Page 16
... axis , but to have no orbital motion . The short epitome so far given illustrates the extraordinary deductive methods adopted by the ancient Greeks . But they went much farther in the same direction . They seem to have been in great ...
... axis , but to have no orbital motion . The short epitome so far given illustrates the extraordinary deductive methods adopted by the ancient Greeks . But they went much farther in the same direction . They seem to have been in great ...
Page 25
... axis , in the opposite direction to the apparent motion of the stars . Also in the writings of Martianus Capella he learnt that the Egyptians had supposed Mercury and Venus to revolve round the sun , and to be carried with him in his ...
... axis , in the opposite direction to the apparent motion of the stars . Also in the writings of Martianus Capella he learnt that the Egyptians had supposed Mercury and Venus to revolve round the sun , and to be carried with him in his ...
Page 27
... axis about the pole of the ecliptic retrograde ( ie . , opposite to the orbital revolution ) , and by making it perform more than one complete revolution in a year , the added part being of the whole , he was able to include the ...
... axis about the pole of the ecliptic retrograde ( ie . , opposite to the orbital revolution ) , and by making it perform more than one complete revolution in a year , the added part being of the whole , he was able to include the ...
Page 28
... axis rotates about the pole of the ecliptic , making one revolution and a twenty - six thousandth part of a revolution in the sidereal year , in the opposite direction to its orbital motion . In view of this fanciful structure it must ...
... axis rotates about the pole of the ecliptic , making one revolution and a twenty - six thousandth part of a revolution in the sidereal year , in the opposite direction to its orbital motion . In view of this fanciful structure it must ...
Page 41
... axis . DE is the minor axis . C is the centre . The direction of AB is the line of apses . The ratio of CS to CĂ is the excentricity . The position of the planet at A is the perihelion ( nearest to the sun ) . The position of the planet ...
... axis . DE is the minor axis . C is the centre . The direction of AB is the line of apses . The ratio of CS to CĂ is the excentricity . The position of the planet at A is the perihelion ( nearest to the sun ) . The position of the planet ...
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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