The Comets: A Descriptive Treatise Upon Those Bodies. With a Condensed Account of the Numerous Modern Discoveries Respecting Them; and a Table of All the Calculated Comets, from the Earliest Ages to the Present Time |
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Page 7
... nebulosity , called the tail . Sometimes the centre of the head is occupied by a starlike point or nucleus ; at others by a well - defined planetary disk , while in by far the greater number of instances , it exhibits nothing more than ...
... nebulosity , called the tail . Sometimes the centre of the head is occupied by a starlike point or nucleus ; at others by a well - defined planetary disk , while in by far the greater number of instances , it exhibits nothing more than ...
Page 8
... nebulosity which surrounds a highly condensed or planetary nucleus . Some comets have attained such an extraordinary degree of splendour , as to be distinctly visible at noon- day , or to render the stars dim by contrast , and cast ...
... nebulosity which surrounds a highly condensed or planetary nucleus . Some comets have attained such an extraordinary degree of splendour , as to be distinctly visible at noon- day , or to render the stars dim by contrast , and cast ...
Page 17
... nebulosity are sharply defined , and but rarely so as regards the nucleus , our determinations of their real dimensions are necessarily open to a good deal of uncertainty . One thing , however , is quite certain , that the cometic ...
... nebulosity are sharply defined , and but rarely so as regards the nucleus , our determinations of their real dimensions are necessarily open to a good deal of uncertainty . One thing , however , is quite certain , that the cometic ...
Page 19
... nebulosity may extend much further than we can trace it from the earth , and consequently that our estimates of the true magnitudes are very likely to be under - rated . It has been remarked above , that the real dimen- sions of comets ...
... nebulosity may extend much further than we can trace it from the earth , and consequently that our estimates of the true magnitudes are very likely to be under - rated . It has been remarked above , that the real dimen- sions of comets ...
Page 20
... 0.36 December 16 • 4,250 • • 0.35 December 17 • 3,000 0.34 • The nebulosity surrounding the nucleus of the great comet of 1807 expanded as the distance from the sun increased . The measures of Schröter give the fol- lowing 20 THE COMETS .
... 0.36 December 16 • 4,250 • • 0.35 December 17 • 3,000 0.34 • The nebulosity surrounding the nucleus of the great comet of 1807 expanded as the distance from the sun increased . The measures of Schröter give the fol- lowing 20 THE COMETS .
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The Comets - A Descriptive Treatise Upon Those Bodies, with a Condensed ... John Russell Hind No preview available - 2011 |
Common terms and phrases
amongst the stars Aphelion appearance April arrival at perihelion astronomers August Author axis Berlin Biela bodies Bouvard bright Brorsen Burckhardt calculated Cambridge century Chinese observations Clausen Collegio Romano comet discovered comet observed Comet of Encke comet of Halley comet was observed computed constellation D'Arrest December detected diameter Discovered by Pons earth elements epoch exhibited February Gambart grand comet Greenwich Mean Halley's comet heavens Herschel Hevelius Hind History identity Isle of Bourbon January John Herschel July June Jupiter Königsberg Laugier length Lexell March Marseilles Mechain miles month motion naked eye nebulosity November nucleus numbers observatory observed in Europe Octavo October Olbers Ophiuchus parabolic Paris path perihelion distance perihelion passage period of revolution periodical comet perturbations Peter Apian Pingré planetary probable Professor Encke remarkable comet right ascension Rome Rümker Second Edition Sept September Struve sun's tail tions Tycho Brahe Ursa Major Verrier Vico
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