History of Astronomy |
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Page vii
... facts from new points of view , as much as by the accumulation of facts . The mental capacity of one age does not seem to differ from that of other ages ; but it is the imagination of new points of view that gives a wider scope to that ...
... facts from new points of view , as much as by the accumulation of facts . The mental capacity of one age does not seem to differ from that of other ages ; but it is the imagination of new points of view that gives a wider scope to that ...
Page viii
... facts as in theories . So it is that these men , who have built up the most sure and most solid of all the sciences , refuse to invite others to join them in vain speculation . The writer has , therefore , in this short History , tried ...
... facts as in theories . So it is that these men , who have built up the most sure and most solid of all the sciences , refuse to invite others to join them in vain speculation . The writer has , therefore , in this short History , tried ...
Page 5
... fact has been confirmed by Egyptian and Chinese observations on the length of the shadow of a vertical pillar , made thousands of years before the Christian era , in summer and winter . There are other reasons why we must be tolerant of ...
... fact has been confirmed by Egyptian and Chinese observations on the length of the shadow of a vertical pillar , made thousands of years before the Christian era , in summer and winter . There are other reasons why we must be tolerant of ...
Page 6
... facts translated from the original sculptures , papyri , and inscribed bricks , dating back thousands of years . In attempting to appraise the efforts of the beginners we must remember that it was natural to look upon the earth ( as all ...
... facts translated from the original sculptures , papyri , and inscribed bricks , dating back thousands of years . In attempting to appraise the efforts of the beginners we must remember that it was natural to look upon the earth ( as all ...
Page 8
... fact that some alleged observa- tions date back to a period before the Chinese had invented the art of writing leads immediately to the question how far tradition can be trusted . Our first detailed knowledge was gathered in the far ...
... fact that some alleged observa- tions date back to a period before the Chinese had invented the art of writing leads immediately to the question how far tradition can be trusted . Our first detailed knowledge was gathered in the far ...
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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 nebulę 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