History of Astronomy |
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Page 14
He deduced his system, in which the earth revolves in an orbit, from fantastic first
principles, of which the following are ... He wrote nothing, but is supposed to have
said that the earth, moon, five planets, and fixed stars all revolve round the sun, ...
He deduced his system, in which the earth revolves in an orbit, from fantastic first
principles, of which the following are ... He wrote nothing, but is supposed to have
said that the earth, moon, five planets, and fixed stars all revolve round the sun, ...
Page 22
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. If, then, we suppose the earth fixed and the sun to revolve round it once a
year, and ...
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. If, then, we suppose the earth fixed and the sun to revolve round it once a
year, and ...
Page 25
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 annual motion round the earth. He noticed that the same supposition, ...
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 annual motion round the earth. He noticed that the same supposition, ...
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Contents
Ancient AstronomyChinese and Chaldeans | 7 |
Ancient Greek Astronomy | 13 |
The Reign of Epicycles From Ptolemy | 23 |
3 other sections not shown
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Common terms and phrases
accurate observations Airy ancient astro Astronomer Royal astronomical units attraction axis bright calculations Cape Cassini catalogue centre century Chinese comet compute Copernicus diameter discovered discovery earth eclipse Egyptian epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley Halley's comet heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Lick Observatory light line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor miles a second moon moon's nebula Newton nodes noticed Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil recognised records refractor retrograde retrograde motion revolve round ring rotation satellites seems seen showed Sirius solar system spectra spectroscope spectrum sphere spots stellar sun-spots supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith
Bibliographic information
| Title | History of Astronomy The history of science series |
| Author | George Forbes |
| Publisher | Watts, 1921 |
| Original from | Indiana University |
| Digitized | 5 Aug 2010 |
| Length | 150 pages |
| Export Citation | BiBTeX EndNote RefMan |