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Geography Resources for Teachers
Call Number: 681.118092 HAR
Publication Date: 2005-10-01
Lacking the ability to measure their longitude, sailors throughout the great ages of exploration had been literally lost at sea as soon as they lost sight of land. Thousands of lives, and the increasing fortunes of nations, hung on a resolution. In stark contrast, one man, John Harrison, dared to imagine a mechanical solution--a clock that would keep percise time at sea, something no clock had ever been able to do on land.