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New Method of Correcting Lunar Distances, and Improved Method of Finding the Error and Rate of a Chronometer by Equal Altitudes (Classic Reprint) - Softcover
Inhaltsangabe
This historical book improves the methods of measuring longitude. It draws from centuries of work that came before, including the difficulties faced by those who sail the world's oceans, the need for accurate timekeeping and the development of tools to help with that, the influences of astronomy and a deep understanding of mathematics, and the maturation of the sciences over time. The author shares numerous examples of observations, calculations, and corrections, all to aid in finding precise longitude through the use of lunar distances. This book is a valuable resource for mathematicians, astronomers, sailors, scientists, and historians with an interest in the deep and fascinating history of navigation and astronomy, and how these fields intersected and advanced through the centuries.
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Reseña del editor
Excerpt from New Method of Correcting Lunar Distances, and Improved Method of Finding the Error and Rate of a Chronometer by Equal Altitudes
The error of the chronometer above alluded to is that which is obtained by apply ing the daily rate (multiplied by the proper number of days) to the error found before leaving port. The agreement or disagreement of the error thus found with that found by the lunar observation will be the test of the good or bad going of the chronometer.
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.
Reseña del editor
Excerpt from New Method of Correcting Lunar Distances, and Improved Method of Finding the Error and Rate of a Chronometer by Equal Altitudes
To correct this Greenwich time, take the difference between the two Prop. Logs. In the Almanac which stand against the two distances between which the true dis tance falls. With this difference and the interval of time just found, enter Table X. Of this Appendix, and take out the seconds, which are to be added to the approx imete Greenwich time when the Prop. Logs. Are decreasing, b'ut subtracted when the Prop. Logs. Are increasing. The result is the true Greenwich 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.
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New Method of Correcting Lunar Distances, and Improved Method of Finding the Error and Rate of a Chronometer by Equal Altitudes Classic Reprint
Anbieter: PBShop.store US, Wood Dale, IL, USA
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781333771270
Anzahl: 15 verfügbar
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New Method of Correcting Lunar Distances, and Improved Method of Finding the Error and Rate of a Chronometer by Equal Altitudes Classic Reprint
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
Verkäuferbewertung 5 von 5 Sternen
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781333771270
Anzahl: 15 verfügbar