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Excerpt from Handy Methods of Geodetic Astronomy for Land Surveyors, 1921 To find the Mean Time of any Star's Culmination at any Meridian. Rule 1. To the Mean Time at 0 hours Sidereal Time in the Ephemeris on the previous day, or the given day, add the Star's Right Ascension reduced to Mean Time by Table p. 79 Whitaker. (If the two quantities make more than 24 hours take the previous day, if less, take the given day.) Rule 2. From the Star's Right Ascension, increased if necessary by 24 hours, deduct the Sidereal Time at Mean Noon in the Ephemeris, the result will be a Sidereal interval, which, reduced to Mean Time, will be the answer. When the Meridian is not the same as Greenwich, the Mean Time, Apparent Time, or Sidereal Time, have all to be corrected for the difference of Longitude, expressed in time. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Vols. for Jan. 1896-Sept. 1930 contain a separately page section of Papers and discussions which are published later in revised form in the society's Transactions. Beginning Oct. 1930, the Proceedings are limited to technical papers and discussions, while Civil engineering contains items relating to society activities, etc.
Excerpt from Handy Methods of Geodetic Astronomy for Land Surveyors, 1921 Whitaker's Almanack, a book of mathematical tables, and a 20-inch slide-rule, the Surveyor can utilise his ordinary 6-inch transit-theodolite, or even one of less size, to determine his geographical position with considerable accuracy. Philip's cardboard Planispheres, published for either Hemisphere, are an inexpensive and most useful addition. The particular feature of this pamphlet is, however, to show how, by means of some rapidly made diagrams, the stars available at time and place can be at once identified, and the observation facilitated. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.