 | 1860 - 356 pages
...appearances exhibited by the comet of Donati has led me to think it probable that some other canse may concur in its production. The ordinary laws of...occupied a comparatively small part of its whole breadth. 3Iy own estimate on September 30 gave it but one-cighth of iha entire width of the tail, in which case... | |
 | 1859 - 602 pages
...Miscellaneous Articles. SUGGESTIONS AS TO THE STRUCTURE OP THE TAILS OF COMETS. BY THE REV. TW WEBB. HPHOUGH there seems to be no question that the dark space...calculation will prove that the sine would exceed the versed sine only by something less than one-eighth part, and consequently the resulting difference... | |
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Though there seems to be no question that the dark space so frequently included in the tails of great comets is the result of a hollow structure, an attentive consideration of the appearances exhibited by the comet of Donati has led me to think it probable... 