Download book On the Theory of the Moon Volume 10; And on the Pertubations of the Planets

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Download book On the Theory of the Moon Volume 10; And on the Pertubations of the Planets

On the Theory of the Moon Volume 10; And on the Pertubations of the Planets. John William Lubbock

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Author: John William Lubbock
Page Count: 34 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
Format: Pdf
ISBN: 9781130645385
File size: 22 Mb
Download Link: On the Theory of the Moon Volume 10; And on the Pertubations of the Planets
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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. 1861 Excerpt: ...only given to tenths of seconds, although we obtained them to the hundredths and even thousandths of seconds: as this is the case, a great deal of our work is thrown away. This degree of accuracy is, moreover, inconsistent with the extent to which the decimal places are carried in the periods of the arguments which are given in some cases, as in that of the variation, to the ten-millionth of a day, -00001" in sexagesimal seconds, or the hundred-thousandth of a second. Eight of the empirical corrections of Mr. Longstreth correspond to those arguments to which my friend, M. de Pontccoulant, subjoined the following note: --" Nous avons marque d'un (a) les resultats de M. Plana que nous avons reconnus fautifs par la revision de ses formules." Mr. Longstreth does not tell us what observations he made use of to obtain these empirical corrections, or how he set about it. There are eight empirical corrections of Mr. Longstreth in the American Tables, corresponding to the following arguments: --It appears, from the Appendix to the American Nautical Almanac for 1855, that in addition to the above, Mr. Longstreth furnished the following three corrections. Nothing is there said of the mode adopted by Mr. Longstreth to find these corrections, except that he obtained them empirically, -which is very unsatisfactory. Index. Argument. Plana. Pontecoulant. Longstreth. 64 2r+2iJ--3-376--5-728--5-776 65 5--21J 37-191 39-427 39 391 67 2r--5--2ij-030-514-530 Of these eleven coefficients furnished by Mr. Longstreth, eight are identical with those of M. de Pontecoulant; of the remaining three coefficients, which therefore require particular attention, the following are the values according to Burg. Burckhdt. Damois. Plana. Pont. Longsth. 27 2r--25+5, 2-5 2-4 25--1-...

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