Celestial Objects for Common TelescopesLongmans, Green, 1873 - 343 páginas |
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Página 30
... period averaging about 10 , or , according to Schmidt and Wolf ( from a more extended comparison ) , 11.2 † years , which corresponds so exactly with the period of all magnetic varia- tions , that both , as well as aurora and electrical ...
... period averaging about 10 , or , according to Schmidt and Wolf ( from a more extended comparison ) , 11.2 † years , which corresponds so exactly with the period of all magnetic varia- tions , that both , as well as aurora and electrical ...
Página 33
... period of rotation is still doubt- ful . Laugier's value , 25d 8h 10m , was formerly adopted , but Carrington has given 249 23h 18m 238 , Spörer 24d 14h 59m . Perhaps , as Carrington suggests , the interior mass may revolve with greater ...
... period of rotation is still doubt- ful . Laugier's value , 25d 8h 10m , was formerly adopted , but Carrington has given 249 23h 18m 238 , Spörer 24d 14h 59m . Perhaps , as Carrington suggests , the interior mass may revolve with greater ...
Página 34
... Carrington and Noble nearer the centre than usual in 1870 , a maximum spot - period . † He has since adopted an opposite opinion . - Monthly Notices , xxvii . 286 . เ The authors of Solar Physics ' consider them ( 34 THE SOLAR SYSTEM .
... Carrington and Noble nearer the centre than usual in 1870 , a maximum spot - period . † He has since adopted an opposite opinion . - Monthly Notices , xxvii . 286 . เ The authors of Solar Physics ' consider them ( 34 THE SOLAR SYSTEM .
Página 70
... periods , † nor for the specks of light which more * Compare Elwes's account of the small cones on the floor of the great extinct crater Haleakala , some of them ' broken down at the side , nearly always on the NE .'- Sketcher's Tour ...
... periods , † nor for the specks of light which more * Compare Elwes's account of the small cones on the floor of the great extinct crater Haleakala , some of them ' broken down at the side , nearly always on the NE .'- Sketcher's Tour ...
Página 143
... period of rotation . This , however , according to B. and M. , is very nearly 9h 55m 30s for day and night . * The equator of this huge globe is therefore flying 6 * Airy , from Cambridge observations in 1834 , makes it 9 less . Schmidt ...
... period of rotation . This , however , according to B. and M. , is very nearly 9h 55m 30s for day and night . * The equator of this huge globe is therefore flying 6 * Airy , from Cambridge observations in 1834 , makes it 9 less . Schmidt ...
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Términos y frases comunes
achr achromatic aperture Aquil astronomers atmosphere beautiful Binary bluish Boöt bright brighter brilliant Buffham Cassini centre Ceph Clusters colour comet constellation craters curious dark Dawes deep diameter disc Double Stars Drac dusky Earth eye-piece faint field flushed white globe greenish grey Herc Herschel Huggins interior Jupiter larger Lassell libration light lilac limb luminous lunar minute stars Moon motion naked eye nearly nebulæ noticed nucleus object object-glass observers orange pair pale blue pale white pale yellow photosphere Pisc planet proper motion Red Star reflector region remarkable Right Ascension ring ruddy satellites Schm Schr Schröter Schwabe Secchi seen shadow shew side silvery white smaller smalt solar sometimes spec spots streaks surface Taur telescope topaz Triple Virg visible xIxh xvih XVIII yellowish
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Página 345 - A NEW STAR ATLAS, for the Library, the School, and the Observatory, in Twelve Circular Maps (with Two Index Plates). Intended as a Companion to ' Webb's Celestial Objects for Common Telescopes.
Página 46 - Fairest of stars, last in the train of night, If better thou belong not to the dawn, Sure pledge of day, that crown'st the smiling morn With thy bright circlet, praise Him in thy sphere, While day arises, that sweet hour of prime.
Página 182 - Lift up your eyes on high, and behold who hath created these things, that bringeth out their host by number; he calleth them all by names by the greatness of his might, for that he is strong in power; not one faileth.
Página 345 - Why didn't somebody teach me the constellations, too, and make me at home in the starry heavens which are always overhead, and which I don't half know to this day?
Página 30 - I have said, he spent to satisfy himself; six more years to satisfy, and still thirteen more to convince, mankind. For thirty years never has the Sun exhibited his disc above the horizon of Dessau without being confronted by Schwabe's imperturbable telescope, and that appears to have happened, on an average, about 300 days a year.
Página 65 - Webb makes the following remarks on the rills:—"These most singular furrows pass chiefly through levels, intersect craters (proving a more recent date), reappear beyond obstructing mountains, as though carried through by a tunnel, and commence and terminate with little reference to any conspicuous feature of the neighbourhood.