An Account Of An Attempt To Ascertain The Longitude At Sea
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An Account Of An Attempt To Ascertain The Longitude At Sea
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Author : Zachariah Williams
language : en
Publisher: Sagwan Press
Release Date : 2018-02-08
An Account Of An Attempt To Ascertain The Longitude At Sea written by Zachariah Williams and has been published by Sagwan Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-08 with History categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
An Account Of An Attempt To Ascertain The Longitude At Sea By An Exact Theory Of The Variation Of The Magnetical Needle
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Author : Samuel Johnson
language : en
Publisher:
Release Date : 1755
An Account Of An Attempt To Ascertain The Longitude At Sea By An Exact Theory Of The Variation Of The Magnetical Needle written by Samuel Johnson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1755 with categories.
An Account Of An Attempt To Ascertain The Longitude At Sea By The Variation Of The Magnetical Needle
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Author : Zachariah Williams
language : en
Publisher:
Release Date : 1755
An Account Of An Attempt To Ascertain The Longitude At Sea By The Variation Of The Magnetical Needle written by Zachariah Williams and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1755 with categories.
The Theory And Practice Of Finding The Longitude At Sea Or Land To Which Are Added Various Methods Of Determining The Latitude Of A Place And Varia
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Author : Anonymous
language : en
Publisher: Rarebooksclub.com
Release Date : 2013-09
The Theory And Practice Of Finding The Longitude At Sea Or Land To Which Are Added Various Methods Of Determining The Latitude Of A Place And Varia written by Anonymous and has been published by Rarebooksclub.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09 with categories.
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1793 edition. Excerpt: ... error in the altitude of an object near the meridian may produce a considerable error in the apparent time; and because the altitude of a star cannot always be so accurately observed as is necessary for establishing the apparent time; nor can the time, inferred from the Moon's altitude, be depended on, unless its declination and right ascension are reduced to the time of observation, by applying the equation of second difference--it therefore seems most eligible to use the Sun for this purpose. Hence, if this object is too near the meridian at the time of observation of the distance, it becomes necessary to observe its altitude, when in a more proper situation, either previous, or subsequent thereto. Hence the error of the watch will be known, which being applied to the time of observation of the distance, will give the apparent time of observation, agreeable to the meridian for which this error was determined. Or, if the change of longitude in time, between the meridians of the places where the observations were made for ascertaining the time and longitude, be applied to the above found apparent time, by addition or subtraction, according as the ship's course made good has been in the eastern or western quarter, the apparent time will hence be known, for the meridian of the place where the observations were made for determining the longitude. If the watch gains or loses considerably, allowance must be made for its rate in the above interval. October 17, 1786, in latitude 360 12' S. and longitude, by account, 480 15'W. the following observations were taken in order to determine the error of the watch, the height of the eye being 17 feet. Time Towards noon, the following observations were made, the height of the eye being 16 feet....
Discovery Of Longitude The
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Author : Joan Marie Galat
language : en
Publisher: Pelican Publishing Company, Inc.
Release Date : 2012-09-14
Discovery Of Longitude The written by Joan Marie Galat and has been published by Pelican Publishing Company, Inc. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-09-14 with Juvenile Nonfiction categories.
Scientific discovery changes the world! Discover the fascinating story behind one of the most important changes to nautical navigation in this nonfiction book for young readers. More than 300 years ago, explorers wandered the seas using unreliable maps. What they needed to know was the longitude of their locations, but for that they needed accurate time keeping. Unfortunately, no accurate source of time measurement at sea existed. In 1714 the British government decided to offer a reward to anyone who could solve the problem. Learned men and great thinkers alike tried unsuccessfully to work out a solution. They declared it unsolvable! Carpenter John Harrison was intrigued; he thought he might have a solution. He worked for years to design a clock that functioned accurately at sea, even though no one believed he could do it. Even after his timepiece was demonstrated effective at sea, he was still not acknowledged for his ingenious solution. It took many years and intervention by the king to grant Harrison the recognition and reward he deserved for solving the problem of how to accurately track longitude and for winning the British government prize. The book offers a detailed map of the world at that time and includes the advancements in the use of longitude since then.
An Account Of An Attempt To Ascertain The Longitude At Sea By An Exact Theory Of The Variation Of The Magnetical Needle With A Table Of Variations At The Most Remarkable Cities In Europe From The Year 1660 To 1860
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Author : Zachariah Williams
language : it
Publisher:
Release Date : 1755
An Account Of An Attempt To Ascertain The Longitude At Sea By An Exact Theory Of The Variation Of The Magnetical Needle With A Table Of Variations At The Most Remarkable Cities In Europe From The Year 1660 To 1860 written by Zachariah Williams and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1755 with Navigation categories.
A Study Of Attempts To Determine Longitude At Sea From Observation Of The Variation Of The Magnetic Compass Contained In Papers Submitted To The Board Of Longitude
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Author : A. H. Cox
language : en
Publisher:
Release Date : 1968
A Study Of Attempts To Determine Longitude At Sea From Observation Of The Variation Of The Magnetic Compass Contained In Papers Submitted To The Board Of Longitude written by A. H. Cox and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with categories.
An Attempt To Discover The Longitude At Sea
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Author : Francis Haldanby
language : en
Publisher:
Release Date : 1714
An Attempt To Discover The Longitude At Sea written by Francis Haldanby and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1714 with Longitude categories.
A Survey Of The Efforts To Determine Longitude At Sea 1660 1760
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Author : Seymour L. Chapin
language : en
Publisher:
Release Date : 1952
A Survey Of The Efforts To Determine Longitude At Sea 1660 1760 written by Seymour L. Chapin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with categories.
Finding Longitude
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Author : Richard J. Dunn
language : en
Publisher:
Release Date : 2014
Finding Longitude written by Richard J. Dunn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Longitude categories.
Official publication of the National Maritime Museum's exhibition "Ships, Clocks and Stars: The Quest for Longitude". 300 years ago, amidst growing frustration from the naval community and pressure from the increasing importance of international trade, the British government passed the 1714 Longitude Act. It was an attempt to solve one of the most pressing problems of the age: how to determine a ship's longitude (east-west position) at sea. With life-changing rewards on offer, the challenge captured the imaginations and talents of astronomers, skilled craftsmen, politicians, seamen and satirists. This beautifully illustrated book is a detailed account of these stories, and how the longitude problem was solved. Finding Longitude tells a new story of one of the great achievements of the Georgian age, and how it changed our understanding of the world.