The Method of Finding the Longitude at Sea by Time-Keepers (Classic Reprint): To Which Are Added, Tables of Equations to Equal Altitudes - Couverture souple

William Wales

9781331975021: The Method of Finding the Longitude at Sea by Time-Keepers (Classic Reprint): To Which Are Added, Tables of Equations to Equal Altitudes

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ISBN 10 : 1331975026 ISBN 13 : 9781331975021

Editeur : Forgotten Books, 2018

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Master the method of finding longitude at sea with time-keepers and practical observations

This edition presents a clear, step-by-step approach to using a time-keeper to determine longitude. It explains the ideas behind longitude, how to apply a watch to the task, and how to measure the rate of a time-keeper in order to pinpoint mean time at sea.

Designed for sailors and students of navigation, it also outlines the advantages and limits of time-keeper methods, and contrasts them with observations of fixed stars and solar altitudes. The text emphasizes practical procedures, including quick calculations and the reasoning behind daily observations at sea.

How to use a time-keeper to find longitude and why rate matters

Simple, repeatable methods for deriving daily gains or losses in a watch

Alternative approaches using fixed stars and solar altitude with Hadley’s quadrant

Tables of equations and practical examples to guide practice

Ideal for readers of maritime history and navigation who want a grounded, hands-on look at early methods for determining position at sea. This edition supports curious minds and professionals seeking a historical perspective on practical astronomy at sea.

Les informations fournies dans la section � Synopsis � peuvent faire r�f�rence � une autre �dition de ce titre.

�diteur: Forgotten Books
Date d'�dition: 2018
Langue: anglais
ISBN 10: 1331975026
ISBN 13: 9781331975021
Reliure: Broch�
Nombre de pages: 135
Coordonn�es du fabricant: Copytech (UK) Ltd, Trading as Printondemand-worldwide.com
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The Method of Finding the Longitude at Sea by Time-Keepers: To Which Are Added

William Wales

Edit� par Forgotten Books, 2018

ISBN 10 : 1331975026 ISBN 13 : 9781331975021

Neuf Paperback

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Vendeur : Forgotten Books, London, Royaume-Uni

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Paperback. Etat : New. Print on Demand. In 'The Method of Finding the Longitude at Sea', the author demonstrates a simple and precise method for sailors to determine their longitude by using a timekeeper. This book provides thorough instructions and tables that enable seafarers to calculate their position accurately, a significant advancement in navigation at the time of its publication. The author addresses common misconceptions about the subject and clearly explains the principles of longitude, the role of the Earth's rotation, and the relationship between time and longitude. By presenting alternative methods and considering potential errors, the author presents a comprehensive and reliable guide to finding longitude at sea. This book remains a valuable resource for anyone interested in the history of navigation and the development of techniques for determining longitude. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N� de r�f. du vendeur 9781331975021_0

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