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The Observatory Volume 6 download

The Observatory Volume 6 download

The Observatory Volume 6.cNasa Astrophysics Data Service
The Observatory Volume 6
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Author: Nasa Astrophysics Data Service
Number of Pages: 162 pages
Published Date: 01 May 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: Englishhttps://d1w7fb2mkkr3kw.cloudfront.net/assets/images/book/large/9781/2311/9781231143599.jpg
Format: Pdf
ISBN: 9781235928710
Download Link: The Observatory Volume 6
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1883 Excerpt: ... first discoverer of the principal division in Saturn's ring, and that the supposition that our countryman William Ball anticipated him in this is founded on a mistake, are points now universally admitted, and respecting which there is no doubt. But subsidiary questions have been raised regarding the accuracy of the engraving purporting to be a representation of a drawing made by Ball on the 13th of October, 1665, which is found in a few, and only a few, copies of the first volume of the 'Philosophical Transactions.' In the January number of our 'Monthly Notices' is a paper by Professor Adams, in which he states that the engraving was made from a paper cutting, which he thinks was folded twice in directions at right angles to each other; he then suggests that only one quadrant of the ellipse representing the planet's ring was cut out, and the lines of folding not exactly corresponding with the two axes of the ellipse, the result was that when the whole was opened out, the figure appeared to have those curious shallow notches or depressions at the extremities of the minor axis which are shown in the engraving (see 'The Observatory' for last November, Vol. v. p. 332). At first I felt inclined, unreservedly, to accept this ingenious explanation, but on subsequent consideration I confess I feel much more doubtful about doing so. In the first place, Ball himself says that the figure was "a little hollow above and below." Professor Adams thinks that "this clause has been added or altered in some way to correspond with the given figure." This is, of course, pure conjecture, and it is surely too much to suppose that Sir Robert Moray would so alter, or add to, what professes to be a quotation from Ball's own letter. It is true that Prof. Adams ad...

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