World-life; or, Comparative geology . Fig. 12. Planetary Nebula, H. 2,-i41 Without a Nucleus. NEBUL.^. 47. Fig. Nebula, TWO Nuclei. to the radius of the phenomenon, it hasbeen suggested, may resultfrom edgewise presentationof a ring. This nebula givesa spectrum of three brightlines, one of which is due tohydrogen and one to nitro-gen. G. Stellar Nehulce.—ThQueconsist of a bright nucleusmore or less resembling astar, which is surrounded bya disc of light, sometimes in alternating bands of bright-ness. The nebula H. 450 is one of this class, very stronglymarked,
World-life; or, Comparative geology . Fig. 12. Planetary Nebula, H. 2,-i41 Without a Nucleus. NEBUL.^. 47. Fig. Nebula, TWO Nuclei. to the radius of the phenomenon, it hasbeen suggested, may resultfrom edgewise presentationof a ring. This nebula givesa spectrum of three brightlines, one of which is due tohydrogen and one to nitro-gen. G. Stellar Nehulce.—ThQueconsist of a bright nucleusmore or less resembling astar, which is surrounded bya disc of light, sometimes in alternating bands of bright-ness. The nebula H. 450 is one of this class, very stronglymarked, and it has a spectrum of three bright lines. Onecannot help remarking the resemblance to a stellar nebulapresented by Donatis comet, on the second of June, the central body is sharply defined like a star, theobject is known as a nebulous star. The six foregoing classes of nebulae all give, so far asascertained, spectra of bright lines. They are, therefore,masses of glowing gas. About sixty nebulae have beeninvestigated by Huggins spectroscopically, with resultswhich are satisfactory for th
Size: 1560px × 1601px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublisherchica, bookyear1883
