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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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