History of Astronomy |
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Page 38
... stellar parallax . He says ( De Mundi , etc. ) that the Ptolemean system was too complicated , and the new one which that great man Copernicus had proposed , following in the footsteps of Aristarchus of Samos , though there was nothing ...
... stellar parallax . He says ( De Mundi , etc. ) that the Ptolemean system was too complicated , and the new one which that great man Copernicus had proposed , following in the footsteps of Aristarchus of Samos , though there was nothing ...
Page 50
... also the Royal Observatory of Greeenwich , where he established Flamsteed as first Astronomer Royal , especially for lunar and stellar observations likely to be useful for navigation . At the same time the French 50 THE DYNAMICAL PERIOD.
... also the Royal Observatory of Greeenwich , where he established Flamsteed as first Astronomer Royal , especially for lunar and stellar observations likely to be useful for navigation . At the same time the French 50 THE DYNAMICAL PERIOD.
Page 84
... Stellar parallax , it has been recognised as an instrument of the very highest accuracy , measuring the distance between stars correctly to less than a tenth of a second of arc . The superiority of the heliometer over all other devices ...
... Stellar parallax , it has been recognised as an instrument of the very highest accuracy , measuring the distance between stars correctly to less than a tenth of a second of arc . The superiority of the heliometer over all other devices ...
Page 127
... stellar parallax failed , but led to the discovery of aberration , nutation , and the true velocity of light . Parallax . - The absence of stellar parallax was the great objection to any theory of the earth's motion prior to Kepler's ...
... stellar parallax failed , but led to the discovery of aberration , nutation , and the true velocity of light . Parallax . - The absence of stellar parallax was the great objection to any theory of the earth's motion prior to Kepler's ...
Page 128
... stellar parallaxes is the result of Gill's work ( Cape Results , vol . iii . , part ii . , 1900 ) . 3 Taking the velocity of light at 186,000 miles a second , and the earth's mean distance at 93,000,000 miles , 1 light- year ...
... stellar parallaxes is the result of Gill's work ( Cape Results , vol . iii . , part ii . , 1900 ) . 3 Taking the velocity of light at 186,000 miles a second , and the earth's mean distance at 93,000,000 miles , 1 light- year ...
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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