Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Volumen51American Philosophical Society, 1912 |
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Página 5
... the four variables given in this Bulletin , we have used the maximum bright- ness in three cases , because they are of the algol type . In the case of u Herculis , we have used the mean magnitude 1912. ] 5 DEPTH OF THE MILKY WAY .
... the four variables given in this Bulletin , we have used the maximum bright- ness in three cases , because they are of the algol type . In the case of u Herculis , we have used the mean magnitude 1912. ] 5 DEPTH OF THE MILKY WAY .
Página 6
American Philosophical Society. of u Herculis , we have used the mean magnitude , because the type of variable does not appear to be as yet well established . Here then we have 225 helium stars at an average distance of about 540 light ...
American Philosophical Society. of u Herculis , we have used the mean magnitude , because the type of variable does not appear to be as yet well established . Here then we have 225 helium stars at an average distance of about 540 light ...
Página 10
... mean distance of 540 light - years , or a mean diameter of 1,080 light - years . If this be one twentieth of the average thickness of the Milky Way stratum , as one may infer from the appearance of certain clusters in the constellation ...
... mean distance of 540 light - years , or a mean diameter of 1,080 light - years . If this be one twentieth of the average thickness of the Milky Way stratum , as one may infer from the appearance of certain clusters in the constellation ...
Página 11
... mean diameter of the shell in which they are included will be 270 light- years . This would give exactly 21,600 light - years for the thickness of the stratum of the Milky Way , as before . It is true that Herschel classed all first ...
... mean diameter of the shell in which they are included will be 270 light- years . This would give exactly 21,600 light - years for the thickness of the stratum of the Milky Way , as before . It is true that Herschel classed all first ...
Página 14
... means of more powerful instruments than any yet systematically employed in this work . To feel satisfied that the universe extends on indefinitely , we must have proof of additional clusters of stars of smaller magnitude , and more ...
... means of more powerful instruments than any yet systematically employed in this work . To feel satisfied that the universe extends on indefinitely , we must have proof of additional clusters of stars of smaller magnitude , and more ...
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act of Congress action alcohol AMER AMERICAN PHILOSOPHICAL SOCIETY animal appulses Article authority average basin become belligerent body brachiopods carbon Carboniferous cells cent chemistry clause coal bed coarse commerce compounds Constitution contraband crystal declared density deposits distance double stars effect epileptic evidence existing exophthalmic fact Federal feeble-minded feet force foreign Geol globular clusters Herschel Ibid igneous rocks indices J. J. Stevenson Justice land language legislative light-years limestone mass matings meaning ment miles Moreau nations nature nebulæ neutral normal nulliplex observed Ohio orbits organic organic compounds original outcrop pebbles pelecypods Pennsylvania PHIL Philadelphia police power political President protein Quercus question Revolution River rocks sandstone Senate shale shell sidereal stars statute Supreme Court supreme law surface Talleyrand territory thick tion treaty provisions treaty-making power United Vanport West Virginia whig
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