History of Astronomy |
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Page 16
... accepted that the real existence of these spheres was not suggested , but the idea was only a mathematical conception to facilitate the construction of tables for predicting the places of the heavenly bodies . Aristotle ( 384-322 B.C. ) ...
... accepted that the real existence of these spheres was not suggested , but the idea was only a mathematical conception to facilitate the construction of tables for predicting the places of the heavenly bodies . Aristotle ( 384-322 B.C. ) ...
Page 23
... accepted by Tycho Brahe ; and was as true a representation of the relative motions in the solar system as when we suppose the sun to be fixed and the earth to revolve . The cumbrous system advocated by Ptolemy answered its purpose ...
... accepted by Tycho Brahe ; and was as true a representation of the relative motions in the solar system as when we suppose the sun to be fixed and the earth to revolve . The cumbrous system advocated by Ptolemy answered its purpose ...
Page 25
... accepted later by Tycho Brahe , with the earth fixed . But he now recalled and accepted the views of Pythagoras and others , according to which the sun is fixed and the earth revolves ; and it must be noted that , geometri- cally ...
... accepted later by Tycho Brahe , with the earth fixed . But he now recalled and accepted the views of Pythagoras and others , according to which the sun is fixed and the earth revolves ; and it must be noted that , geometri- cally ...
Page 29
... accepted . This seems unfair , and on reading over what has been written about him at different times it will be noticed that the astronomers -those who have evidently read his great book — are very cautious in the words with which they ...
... accepted . This seems unfair , and on reading over what has been written about him at different times it will be noticed that the astronomers -those who have evidently read his great book — are very cautious in the words with which they ...
Page 47
... accepted on his authority . A blind worship of scientific authori- ties has often delayed the progress of human knowledge , just as too much " instruction " of a youth often ruins his " education . " Grant , in his history of Physical ...
... accepted on his authority . A blind worship of scientific authori- ties has often delayed the progress of human knowledge , just as too much " instruction " of a youth often ruins his " education . " Grant , in his history of Physical ...
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Common terms and phrases
accurate observations Airy astro Astronomer Royal Astronomia Nova astronomical units attraction axis bright calculations Cape Cassini catalogue centre century comet compute Copernicus diameter discovered discovery earth eclipse epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Laplace Lick Observatory light line of apses line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor method miles a second moon moon's nebulæ Newton Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil records refractor retrograde retrograde motion revolution revolve round ring rotation round the sun satellites seems showed Sirius solar system spectra spectroscope spectrum spots stellar sun-spots sun's surface supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith