New PDF release: Longitude: the true story of a lone genius who solved the
By Dava Sobel
ISBN-10: 0802713122
ISBN-13: 9780802713124
Someone alive within the eighteenth century may have identified that “the longitude challenge” was once the thorniest medical hassle of the day—and have been for hundreds of years. missing the power to degree their longitude, sailors during the nice a long time of exploration were actually misplaced at sea once they overpassed land. hundreds of thousands of lives, and the expanding fortunes of countries, held on a resolution.The clinical institution of Europe—from Galileo to Sir Isaac Newton—had mapped the heavens in either hemispheres in its sure pursuit of a celestial solution. In stark distinction, one guy, John Harrison, dared to visualize a mechanical solution—a clock that might hold unique time at sea, whatever no clock had ever been capable of do on land. Longitude is the dramatic human tale of an epic medical quest, and of Harrison's forty-year obsession with development his ideal timekeeper, identified this present day because the chronometer. packed with heroism and chicanery, it's also a desirable short background of astronomy, navigation, and clockmaking, and opens a brand new window on our global.
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Sample text
The captain would throw a log overboard and observe how quickly the ship receded from this temporary guidepost. He noted the crude speedometer reading in his ship’s logbook, along with the direction of travel, which he took from the stars or a compass, and the length of time on a particular course, counted with a sandglass or a pocket watch. Factoring in the effects of ocean currents, fickle winds, and errors in judgment, he then determined his longitude. He routinely missed his mark, of course—searching in vain for the island where he had hoped to find fresh water, or even the continent that was his destination.
Powder of Sympathy 6. The Prize 7. Cogmaker’s Journal 8. The Grasshopper Goes to Sea 9. Hands on Heaven’s Clock 10. The Diamond Timekeeper 11. Trial by Fire and Water 12. A Tale of Two Portraits 13. The Second Voyage of Captain James Cook 14. The Mass Production of Genius 15. In the Meridian Courtyard Acknowledgments Sources For my mother, Betty Gruber Sobel, a four-star navigator who can sail by the heavens but always drives by way of Canarsie. 1. Imaginary Lines When I’m playful I use the meridians of longitude and parallels of latitude for a seine, drag the Atlantic Ocean for whales.
Charles must have been pleased when his mistress, a young Frenchwoman named Louise de Keroualle, reported this bit of news: One of her countrymen had arrived at a method for finding longitude and had himself recently arrived from across the Channel to request an audience with His Majesty. Charles agreed to hear the man out. The Frenchman, the sieur de St. Pierre, frowned on the moons of Jupiter as a means of determining longitude, though they were all the rage in Paris. He put his personal faith in the guiding powers of Earth’s moon, he said.
Longitude: the true story of a lone genius who solved the greatest scientific problem of his time, Volumes 0-2 by Dava Sobel
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