History of Astronomy |
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Page 6
... seen to crawl over it . It was a great step to look on the vault as a hollow sphere carrying the sun too . It must have been difficult to believe that at midday the stars are shining as brightly in the blue sky as they do at night . It ...
... seen to crawl over it . It was a great step to look on the vault as a hollow sphere carrying the sun too . It must have been difficult to believe that at midday the stars are shining as brightly in the blue sky as they do at night . It ...
Page 7
George Forbes. last be seen to rise at sunset . The grouping of the stars into constellations and recording their places was a useful observation . The theoretical prediction of eclipses of the sun and moon , and of the motions of the ...
George Forbes. last be seen to rise at sunset . The grouping of the stars into constellations and recording their places was a useful observation . The theoretical prediction of eclipses of the sun and moon , and of the motions of the ...
Page 21
... seen the Pleiades and Arcturus setting late , which seemed to early commentators a proof of Homer's inaccuracy . Likewise Homer , both in the Odyssey1 ( v . 272–5 ) and in the Iliad ( xviii . 489 ) , asserts that the Great Bear never ...
... seen the Pleiades and Arcturus setting late , which seemed to early commentators a proof of Homer's inaccuracy . Likewise Homer , both in the Odyssey1 ( v . 272–5 ) and in the Iliad ( xviii . 489 ) , asserts that the Great Bear never ...
Page 62
... seen more than once . He found two old comets whose orbits , in shape and position , resembled the orbit of a comet observed by himself in 1682 . - Apian observed one in 1531 ; Kepler the other 62 THE DYNAMICAL PERIOD.
... seen more than once . He found two old comets whose orbits , in shape and position , resembled the orbit of a comet observed by himself in 1682 . - Apian observed one in 1531 ; Kepler the other 62 THE DYNAMICAL PERIOD.
Page 63
... seen seemed to be part of a parabolic orbit . He then predicted its return at the end of 1758 or beginning of 1759 , when he should be dead ; but , as he said , " if it should return , according to our prediction , about the year 1758 ...
... seen seemed to be part of a parabolic orbit . He then predicted its return at the end of 1758 or beginning of 1759 , when he should be dead ; but , as he said , " if it should return , according to our prediction , about the year 1758 ...
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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