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Earth's Magnetism in the Age of Sail 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024

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Jonkers, A.R.T. 作者

Johns Hopkins Univ Pr

译者

2003-4 出版日期

280 页数

$ 58.76 价格

HRD

丛书系列

9780801871320 图书编码

Earth's Magnetism in the Age of Sail 在线电子书图书标签: STS EarlyModernEuropean

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Earth's Magnetism in the Age of Sail 在线电子书 epub 下载 mobi 下载 pdf 下载 txt 下载 2024

Earth's Magnetism in the Age of Sail 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024

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Earth's Magnetism in the Age of Sail 在线电子书 pdf 下载 txt下载 epub 下载 mobi 在线电子书下载

Earth's Magnetism in the Age of Sail 在线电子书图书描述

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 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 Drawing on a wealth of unpublished sources-including manuals, treatises, sailing directions, and logbooks in a half-dozen languages-A. R. T. Jonkers explores these early efforts both for what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 masterful combination of science and history, will appeal to a broad audience of specialists as well as general readers.

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