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- catalog abstract ""From about 1600 to 1800 scientists and mariners made increasingly sophisticated attempts to understand the Earth's magnetic field and use it in navigation. Europeans had long understood the difference between the magnetic and true north, but why did it vary as one traversed the sea? Could this variation be used to pinpoint longitude? Drawing on a wealth of unpublished sources - including manuals, treatises, sailing directions, and logbooks in a half-dozen languages - A.R.T. Jonkers explores these early efforts both for what they reveal about the history of science and navigation and as a unique record of the actual changes in the Earth's magnetic field. The result, a combination of science and history, will appeal to a broad audience of specialists as well as general readers."--Jacket.".
- catalog contributor b12836353.
- catalog created "c2003.".
- catalog date "2003".
- catalog date "c2003.".
- catalog dateCopyrighted "c2003.".
- catalog description ""From about 1600 to 1800 scientists and mariners made increasingly sophisticated attempts to understand the Earth's magnetic field and use it in navigation. Europeans had long understood the difference between the magnetic and true north, but why did it vary as one traversed the sea? Could this variation be used to pinpoint longitude? Drawing on a wealth of unpublished sources - including manuals, treatises, sailing directions, and logbooks in a half-dozen languages - A.R.T. Jonkers explores these early efforts both for what they reveal about the history of science and navigation and as a unique record of the actual changes in the Earth's magnetic field. The result, a combination of science and history, will appeal to a broad audience of specialists as well as general readers."--Jacket.".
- catalog description "Includes bibliographical references (p. [249]-279) and index.".
- catalog description "Introduction: merging geomagnetism and history -- pt. 1. Earth's magnetism -- The earth's magnetic field -- The age of diversity: geomagnetism before 1600 -- The age of discord: geomagnetism in the seventeenth century -- The age of data: geomagnetism in the eighteenth century -- pt. 2. In the age of sail -- Traversing the trackless oceans -- Following the iron arrow -- Plotting the third coordinate -- Conclusion: quantifying geomagnetic navigation.".
- catalog extent "xvii, 300 p. :".
- catalog identifier "0801871328 (hardcover : alk. paper)".
- catalog issued "2003".
- catalog issued "c2003.".
- catalog language "eng".
- catalog publisher "Baltimore : Johns Hopkins University Press,".
- catalog subject "538/.7/09 21".
- catalog subject "Compass History.".
- catalog subject "Geomagnetism History.".
- catalog subject "Navigation History.".
- catalog subject "QC813 .J66 2003".
- catalog tableOfContents "Introduction: merging geomagnetism and history -- pt. 1. Earth's magnetism -- The earth's magnetic field -- The age of diversity: geomagnetism before 1600 -- The age of discord: geomagnetism in the seventeenth century -- The age of data: geomagnetism in the eighteenth century -- pt. 2. In the age of sail -- Traversing the trackless oceans -- Following the iron arrow -- Plotting the third coordinate -- Conclusion: quantifying geomagnetic navigation.".
- catalog title "Earth's magnetism in the age of sail / A.R.T. Jonkers.".
- catalog type "History. fast".
- catalog type "text".