 Maanen, these circumstances produce the effect of winding up the arms. Basing his computations on Van Maanen's results, Jeans computes the mass and finds the density of the gas remaining in the nucleus of some of the very long-armed nebulae, nearly all...  The Fundamentals of Astronomy - Page 285by Samuel Alfred Mitchell, Charles Greeley Abbot - 1927 - 307 pagesFull view - About this book
 | Sir Norman Lockyer - Electronic journals - 1924 - 1114 pages
...I8 gm. per centimetre, a figure representing a vacuum perfect than any obtainable in the laboratory. The small amount of gas in an ordinary electric light...times as dense as the nucleus of a spiral nebula. The nebula shown in Fig. 4 exhibits a granulated appearance in its arms. M. 51 (Fig. 5) this takes... | |
 | Charles Greeley Abbot - Astronomy - 1925 - 322 pages
...arms. Continuing in rotation, but only with the linear velocity of the surface of the nucleus, the arms lack velocity sufficient to hold them radial. Thus,...knot-like aggregations under the influence of gravitation. The theory of their formation is clear, and enables the mathematician to compute what ought to be the... | |
 | Charles Greeley Abbot - Astronomy - 1925 - 326 pages
...arms. Continuing in rotation, but only with the linear velocity of the surface of the nucleus, the arms lack velocity sufficient to hold them radial. Thus,...into drops, so, though for different reasons, nebular arras form detached knot-like aggregations under the influence of gravitation. The theory of their... | |
 | Royal Institution of Great Britain - Science - 1925 - 766 pages
...cubic centimetre, a figure representing a vacuum more perfect than any obtainable in the laboratory. The small amount of gas in an ordinary electric light...spread out through St. Paul's Cathedral, would still tie something like 10,oou times as dense as the nucleus of a spiral nebula. The nebula shown in Fig.... | |
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