History of Astronomy |
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Page 83
... Lick Observatory . Greenwich Observatory has been here selected for tracing the progress of accurate measurement . But there is one instrument of great value , the heliometer , which is not used at Greenwich . This serves the purpose of ...
... Lick Observatory . Greenwich Observatory has been here selected for tracing the progress of accurate measurement . But there is one instrument of great value , the heliometer , which is not used at Greenwich . This serves the purpose of ...
Page 89
... Lick Observatory in California , and finally his tour de force , the Yerkes 40 - inch refractor , for Chicago . At Greenwich there is the 28 - inch photographic refractor , and the Thompson equatoreal by Grubb , carrying both the 26 ...
... Lick Observatory in California , and finally his tour de force , the Yerkes 40 - inch refractor , for Chicago . At Greenwich there is the 28 - inch photographic refractor , and the Thompson equatoreal by Grubb , carrying both the 26 ...
Page 115
... Lick Observatory , detected a tiny spot of light closely following the planet . This proved to be a new satellite ( fifth ) , nearer to the planet than any other , and revolv- ing round it in 11h . 57m . 23s . Between its rising and ...
... Lick Observatory , detected a tiny spot of light closely following the planet . This proved to be a new satellite ( fifth ) , nearer to the planet than any other , and revolv- ing round it in 11h . 57m . 23s . Between its rising and ...
Page 116
George Forbes. satellites were found by the examination of photographic plates at the Lick Observatory in 1905 , since which time they have been continuously photographed , and their orbits traced , at Greenwich . On examining these ...
George Forbes. satellites were found by the examination of photographic plates at the Lick Observatory in 1905 , since which time they have been continuously photographed , and their orbits traced , at Greenwich . On examining these ...
Page 134
... Lick Observatory . The shortest period he found was eleven years ( Pegasi ) . In the case of some of these binaries the parallax has been measured , from which it appears that in four of the surest cases the orbits are about the size of ...
... Lick Observatory . The shortest period he found was eleven years ( Pegasi ) . In the case of some of these binaries the parallax has been measured , from which it appears that in four of the surest cases the orbits are about the size of ...
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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