History of Astronomy |
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Page 22
He adopted the epicycles and deferents the retrograde motions of the planets .
We , who know that the earth revolves round the sun once in a year , can
understand that the apparent motion of a planet is only its motion relative to the
earth .
He adopted the epicycles and deferents the retrograde motions of the planets .
We , who know that the earth revolves round the sun once in a year , can
understand that the apparent motion of a planet is only its motion relative to the
earth .
Page 28
This was the point to which the motions of the planets were referred , for the
planes of their orbits were made to pass ... By this arrangement the sun was
situate mathematically near the centre of the planetary system , but he did not
appear to ...
This was the point to which the motions of the planets were referred , for the
planes of their orbits were made to pass ... By this arrangement the sun was
situate mathematically near the centre of the planetary system , but he did not
appear to ...
Page 67
in Germany to search for the planet . Almost immediately afterwards the planet
was discovered , not by any member of the association , but by Piazzi , when
engaged upon his great catalogue of stars . On January 1st , 1801 , he observed
a star ...
in Germany to search for the planet . Almost immediately afterwards the planet
was discovered , not by any member of the association , but by Piazzi , when
engaged upon his great catalogue of stars . On January 1st , 1801 , he observed
a star ...
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Contents
Ancient GREEK ASTRONOMY | 3 |
INSTRUMENTS OF PRECISIONSIZE OF THE SOLAR | 10 |
GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |
5 other sections not shown
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Common terms and phrases
accepted accurate ancient appear astronomers attraction bodies born bright calculations called catalogue cause centre century circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect enabled epicycles equal error excentric explain fact fixed follow force Galileo give given gravitation heavenly heavens held Herschel Hipparchus idea included interesting invented Jupiter Kepler knowledge known later light lunar Mars mass mathematical mean measured method miles minutes moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planetary planets pole position predicted present principle progress proper proved records revolve rotation round Royal satellites says seems seen showed solar system spectroscope spectrum stars studied sun's supported supposed surface tables telescope theory tion trace true Tycho Brahe uniform universal
Bibliographic information
| Title | History of Astronomy Hist. of sci. series History of science series |
| Author | George Forbes |
| Publisher | Watts, 1909 |
| Original from | the University of California |
| Digitized | 13 Jan 2011 |
| Length | 154 pages |
| Export Citation | BiBTeX EndNote RefMan |