History of Astronomy |
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Page 17
... fixed the positions of the zodiacal stars , near to which all the planets in their orbits pass , thus facilitating the determination of planetary motions . Aristarchus ( 320-250 B.C. ) showed that THE GEOMETRICAL PERIOD 17.
... fixed the positions of the zodiacal stars , near to which all the planets in their orbits pass , thus facilitating the determination of planetary motions . Aristarchus ( 320-250 B.C. ) showed that THE GEOMETRICAL PERIOD 17.
Page 18
... passes over equal arcs on the equant in equal times . He then 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 ...
... passes over equal arcs on the equant in equal times . He then 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 ...
Page 22
... passing through the sun , and to be between the earth and the sun . The centres of the epicycles of Mars , Jupiter , and Saturn were supposed to be further away than the sun . Mercury and Venus were supposed to revolve in their ...
... passing through the sun , and to be between the earth and the sun . The centres of the epicycles of Mars , Jupiter , and Saturn were supposed to be further away than the sun . Mercury and Venus were supposed to revolve in their ...
Page 28
... pass through the sun , and the lines of apses do not pass through to the sun . Such was the theory advanced by Copernicus : The earth moves in an epicycle , on a deferent whose centre is a little distance from the sun . The planets move ...
... pass through the sun , and the lines of apses do not pass through to the sun . Such was the theory advanced by Copernicus : The earth moves in an epicycle , on a deferent whose centre is a little distance from the sun . The planets move ...
Page 42
... pass through the sun ; his second was that the line of apses of each planet passes through the sun ; both were contradictory to the Copernican theory . He proceeds cautiously with his propositions until he arrives at his great laws ...
... pass through the sun ; his second was that the line of apses of each planet passes through the sun ; both were contradictory to the Copernican theory . He proceeds cautiously with his propositions until he arrives at his great laws ...
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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