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Home > Art, Film & Photography > The Cause of the Supposed Proper Motion of the Fixed Stars, and an Explanation of the Apparent Acceleration of the Moon's Mean Motion; With Other Problems in Astronomy. a Sequel to the Glacial Epoch
The Cause of the Supposed Proper Motion of the Fixed Stars, and an Explanation of the Apparent Acceleration of the Moon's Mean Motion; With Other Problems in Astronomy. a Sequel to the Glacial Epoch

The Cause of the Supposed Proper Motion of the Fixed Stars, and an Explanation of the Apparent Acceleration of the Moon's Mean Motion; With Other Problems in Astronomy. a Sequel to the Glacial Epoch


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About the Book

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. 1874. Excerpt: ... CHAPTER IX. GEOMETRICAL LAWS CONTINUED, AND THE DEMONSTRATION OF THE CHANGES OCCURRING AT THE SO-CALLED APEX OF SOLAR MOTION. We must now refer to another law connected with the changes in both right ascension and declination, and it is a law which is very easily demonstrated if we select some stars; but although not so apparent if we choose others for demonstration, it yet holds good with regard to every star in the heavens, no matter where it may be situated. This, law produces the most marked results when we examine two star-catalogues. separated by a long interval of time. Referring to diagram, page 117, we will endeavour to show how easily this law is demonstrated as regards a star moving over a circle such as x o l; it also holds good with regard to the course of every other star in the heavens, no matter whether within or without the circle described by the pole. This law is, that the star in its curve varies the rate at which it changes its annual right ascension. Thus at one period a star's annual rate may be say 49 annually, and at another period, say 20 years before, the star's annual rate of change in right ascension was 38 annually, then it is not true that midway between these dates the star's annual rate was 3s-5. A very clear proof of this law maybe given by referring to diagram, p. 117, where a star at o will, from what has been already stated, be found not to change its annual right ascension. Again, if we examined it n years afterwards, when it was at L, and found it still had no annual rate of change in right ascension, it is evident that if we assumed that midway between the two dates it also had no change in right ascension, we should be making a most palpable error. Also, if we found the annual, rate of change in right ascension whe...


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Product Details
  • ISBN-13: 9781150243813
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 246 mm
  • No of Pages: 74
  • Spine Width: 4 mm
  • Width: 189 mm
  • ISBN-10: 1150243813
  • Publisher Date: 01 Feb 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 150 gr


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The Cause of the Supposed Proper Motion of the Fixed Stars, and an Explanation of the Apparent Acceleration of the Moon's Mean Motion; With Other Problems in Astronomy. a Sequel to the Glacial Epoch
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