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Home > Art, Film & Photography > A New System of Practical Astronomy; Made Plain and Easy to Those Who Have Not Studied Mathematics: Containing the Elementary Principles of the Science, All the Rules and Tables Necessary for Making All the Calculations for an Almanac ...
A New System of Practical Astronomy; Made Plain and Easy to Those Who Have Not Studied Mathematics: Containing the Elementary Principles of the Science, All the Rules and Tables Necessary for Making All the Calculations for an Almanac ...

A New System of Practical Astronomy; Made Plain and Easy to Those Who Have Not Studied Mathematics: Containing the Elementary Principles of the Science, All the Rules and Tables Necessary for Making All the Calculations for an Almanac ...


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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. 1835 Excerpt: ...there may!w two eclipses of amcterof the sun and moon heing at a niean, only 33' the sun, and one of the moon. 1f a Full moon happen the refractinn causes hoth luminaries to appear ahove 9 as soon as the sun is within the lunar ecliptic limit, at the herizon when they are actually helow it. l the next Full moon, the sun will ho heyond it, and The mean, or average doratinn of central eclipses therefore there can he hut one eclipse of the moon at of the sun upon the earth in general, is 3h. 43m, The each node; hut as the nodes move hackward in t lie 1 mean doratinn of total eclipses of the moon is 3h. 43m. ecliptic ahove 19 in a year, when the sun passes the 1f to the time of the middle of any ecllpse, either of the s node at the heginning of the year, he may come again sun or moon, there he added 63S3 days. 7 hears, 43 '. within the lunar ecliptic limit at the same node, hefore. minutes, 19 seconds, the time of the mean returo of e the end of the year, and there may he three eclipses of the same eclipse will he had, for a long successinn of the moon in the year: in this case, there will not he years; hut at each retorn it will pass a little farther to i two eclipses of the sun at each node. From the mid. the north or south, till, in process of time, it will leave - rfle of one season of eclipses to tlie middle of the next, the earth at one of the poles; and after th;it, there. is ahout 177 days; the middle of three seasons of eclip. will he no retorn of the same eclipse in less than 13000 ' sex may therefore happen in one year: there may happen an eclipse of the sun hefore the Hth of January, and at each of the next seasons, there may he three eclipses, thus making seven in a year; hut this is a cireumstance thatdoes not take place twice in a centary. T...


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Product Details
  • ISBN-13: 9781130704648
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 72
  • Spine Width: 4 mm
  • Weight: 145 gr
  • ISBN-10: 1130704645
  • Publisher Date: 01 Mar 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Sub Title: Containing the Elementary Principles of the Science, All the Rules and Tables Necessary for Making All the Calculations for an Almanac ...
  • Width: 189 mm


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A New System of Practical Astronomy; Made Plain and Easy to Those Who Have Not Studied Mathematics: Containing the Elementary Principles of the Science, All the Rules and Tables Necessary for Making All the Calculations for an Almanac ...
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