MARINE CHRONOMETERS AT GREENWICH

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Marine Chronometers At Greenwich

Author : Jonathan Betts
ISBN : 9780199641383
Genre : Antiques & Collectibles
File Size : 64.6 MB
Format : PDF
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The Marine Chronometers at Greenwich is the fifth, and largest, of the distinguished series of catalogues of instruments in the collections of the National Maritime Museum. Housed at the Royal Observatory Greenwich -- the 'home of time' and the Prime Meridian of the world -- this extraordinary collection, which includes the celebrated marine timekeepers by John Harrison (1693-1776), is generally considered to be the finest of its kind in existence. The book is however much more than just a catalogue, and includes an accessible and engaging history of the chronometer, revealing why these instruments were important in our scientific and cultural history, and explaining, in simple terms, how they worked and were used. A comprehensive Glossary and Bibliography are included to ensure any technicalities are explained and that the reader has suggestions for useful 'further reading'. Over 480 photographs and illustrations, including many fine macro-photographs and line drawings, illustrate the 'jewel-like' beauty of the chronometer's construction and explain the function and subtleties of its mechanism. A chapter on 'How the Chronometer was Made', describes the fine sub-division of labour used to create these special machines, from bare metal, right up to delivery on board ship, and brief biographies of the makers tell the human story behind this important nineteenth-century industry. Another chapter, 'The Evolution of the Chronometer', aimed at collectors, historians and curators, provides clearly structured information on assessing and dating the chronometer, something many find difficult. And, for the dedicated specialist, there is extensive tabulated data on the technical structure of this important collection, a unique resource for future research.
Category: Antiques & Collectibles

John Harrison And The Quest For Longitude

Author : Jonathan Betts
ISBN : 1906367698
Genre :
File Size : 61.62 MB
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The quest to accurately determine longitude at sea was one of the most remarkable endeavors of the eighteenth century. This is the story of John Harrison (1693-1776), the self-taught English clockmaker who dedicated his life to solving the ocean's longitude problem. From the end of the fifteenth century, merchants, explorers, and adventurers took to the open seas in unprecedented numbers as worldwide trade increased. These journeys were hazardous not only because of the inherent dangers of the ocean but also because, once out of sight of land, sailors had no accurate means of knowing their exact position. Long-distance sea travel was so dangerous that, in 1714, the British Parliament offered a prize to anyone who could solve the problem. Inspired, Harrison designed and built the marine chronometer: the first device to calculate longitude at sea. The chronometer quickly became a vital tool of maritime trade, revolutionizing sea travel and saving countless lives. John Harrison and the Quest for Longitude is the fascinating account of one man's quest to solve one of the greatest practical problems of his time. With sixty full-color images and technical drawings throughout, it sheds important new light on a fundamental piece of British maritime and horological history.
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The Marine Chronometer

Author : Rupert T. Gould
ISBN : 1851493654
Genre : Antiques & Collectibles
File Size : 21.32 MB
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This long-awaited new edition of Gould's seminal text on the development of the marine chronometer not only faithfully reproduces the original, but also includes the author's own extensive notes, made in preparation for a second edition. These amendments
Category: Antiques & Collectibles

Sextants At Greenwich

Author : W.F.J. Mörzer Bruyns
ISBN : 9780199532544
Genre : Business & Economics
File Size : 81.10 MB
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In Sextants at Greenwich the history and development of navigating instruments is described. Before satellite navigation these were used to measure the altitude of the sun and stars above the horizon, to determine the ship's position at sea. The book also contains a catalogue of 347 mariner's astrolabes, cross-staffs, backstaffs, and octants, sextants and artificial horizons preserved in the National Maritime Museum, Greenwich.
Category: Business & Economics

Time Restored

Author : Jonathan Betts
ISBN : 9780191620843
Genre : Science
File Size : 60.18 MB
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This is the story of Rupert T. Gould (1890-1948), the polymath and horologist. A remarkable man, Lt Cmdr Gould made important contributions in an extraordinary range of subject areas throughout his relatively short and dramatically troubled life. From antique clocks to scientific mysteries, from typewriters to the first systematic study of the Loch Ness Monster, Gould studied and published on them all. With the title The Stargazer, Gould was an early broadcaster on the BBC's Children's Hour when, with his encyclopaedic knowledge, he became known as The Man Who Knew Everything. Not surprisingly, he was also part of that elite group on BBC radio who formed The Brains Trust, giving on-the-spot answers to all manner of wide ranging and difficult questions. With his wide learning and photographic memory, Gould awed a national audience, becoming one of the era's radio celebrities. During the 1920s Gould restored the complex and highly significant marine timekeepers constructed by John Harrison (1693-1776), and wrote the unsurpassed classic, The Marine Chronometer, its History and Development. Today he is virtually unknown, his horological contributions scarcely mentioned in Dava Sobel's bestseller Longitude. The TV version of Longitude, in which Jeremy Irons played Rupert Gould, did at least introduce Gould's name to a wider public. Gould suffered terrible bouts of depression, resulting in a number of nervous breakdowns. These, coupled with his obsessive and pedantic nature, led to a scandalously-reported separation from his wife and cost him his family, his home, his job, and his closest friends. In this first-ever biography of Rupert Gould, Jonathan Betts, the Royal Observatory Greenwich's Senior Horologist, has given us a compelling account of a talented but flawed individual. Using hitherto unknown personal journals, the family's extensive collection of photographs, and the polymath's surviving records and notes, Betts tells the story of how Gould's early life, his naval career, and his celebrity status came together as this talented Englishman restored part of Britain's - and the world's - most important technical heritage: John Harrison's marine timekeepers.
Category: Science

Oceanography An Invitation To Marine Science

Author : Tom S. Garrison
ISBN : 9781305480575
Genre : Science
File Size : 74.90 MB
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Developed in partnership with the National Geographic Society, market-leading OCEANOGRAPHY: AN INVITATION TO MARINE SCIENCE, 9e equips students with a basic understanding of the scientific questions, complexities, and uncertainties involved in ocean use-as well as the role and importance of the ocean in nurturing and sustaining life on Earth. The Ninth Edition features the work of seasoned author and educator Tom Garrison along with new co-author Robert Ellis, an assistant professor in the Marine Science Department at Orange Coast College who has managed research projects and educational programs throughout the world. Offering an even stronger emphasis on the science process, the new edition includes more How Do We Know? boxes detailing the science behind how oceanographers know what they know. Coverage of climate change has been updated to reflect the latest findings. In addition, Chapter 14 has been renamed Primary Producers and now includes expanded coverage of photosynthetic and chemosynthetic producers to help students understand the big picture in marine biology. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.
Category: Science