Best Longitude By Dava Sobel
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Ebook About The dramatic human story of an epic scientific quest: the search for the solution of how to calculate longitude and the unlikely triumph of an English genius. With a Foreword by Neil Armstrong.‘Sobel has done the impossible and made horology sexy – no mean feat’ New ScientistAnyone alive in the 18th century would have known that ‘the longitude problem’ was the thorniest scientific dilemma of the day – and had been for centuries. 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.The quest for a solution had occupied scientists and their patrons for the better part of two centuries when, in 1714, Parliament upped the ante by offering a king’s ransom (£20,000) to anyone whose method or device proved successful. Countless quacks weighed in with preposterous suggestions. The scientific establishment throughout Europe – from Galileo to Sir Isaac Newton – had mapped the heavens in both hemispheres in its certain pursuit of a celestial answer. In stark contrast, one man, John Harrison, dared to imagine a mechanical solution.Full of heroism and chicanery, brilliance and the absurd, LONGITUDE is also a fascinating brief history of astronomy, navigation and clockmaking.Note that it has not been possible to include the same picture content that appeared in the original print version.Book Longitude Review :
Longitude is west to east, east to west. But it's not that simple because, for example, the equator is wider around the earth than the Tropic of Capricorn or the Arctic Circle. Although latitude is fixed by the earth and Columbus could sail a "straight line" in 1492 relative to a fixed latitudinal parallel, longitude made sailors feel they were on a train and looking at another train, trying to determine which one just began moving.After reading a book about Mason and Dixon and all of the incredibly (for me) complex math and astronomy involved, I was slow to begin this book. Author Dava Sobel, however, cuts through all the more complicated principles like a good pre-calculus teacher. I would even suggest this book could appeal to adventurous 8th graders. The history is impressive. The Harrison family were watchmakers, but as very precise and diligent watchmakers competitive with the Royal Society and haughty astronomers like Nevil Maskelyne. John Harrison had size, cost, material, temperature fluctuations, moisture, waves, and many more atmospheric obstacles to confront while those relying on lunar readings went much further to produce much less. For the record, I had never heard of John Harrison. His predecessors include Halley, Tycho Brahe, and Galileo, whose attempts to time the speed of light is briefly retold here.This is summer reading, a hero's tale, good defeating bad, The Little Engine that Could. If you or your child is interested in sailing, navigation, astronomy, inventions, machining, or how the British came to rule the word for a time, this is a book to read and re-read. The shipwreck of Sir Shovell's fleet, the fact that longitude was impossible to determine, and the term "bimetallic" is the limit of the author's analytical depth in this book. Skip it. Seems like she repeats the Shovell story nearly every chapter, along with the fact that sailors couldn't determine longitude without a clock. Yeah, we know. We all knew that before buying this book. The analysis of Harrison's clocks is far more focused on the decorations of their faces than on his novel engineering. Detailed descriptions of the clocks and their engineering advancements are absent. Simplistic terms like "bimetallic strip" are promoted as the entire explanation, with no further information provided. Perhaps the author feels the story of Longitude should focus on people instead of engineering. Unfortunately, the people involved are history's greatest astronomers and physicists. The author adds nothing to their well-researched biographies in this book, and fails to communicate even the most basic functions of a clock. This is an extremely disappointing read. I do not recommend it. Read Online Longitude Download Longitude Longitude PDF Longitude Mobi Free Reading Longitude Download Free Pdf Longitude PDF Online Longitude Mobi Online Longitude Reading Online Longitude Read Online Dava Sobel Download Dava Sobel Dava Sobel PDF Dava Sobel Mobi Free Reading Dava Sobel Download Free Pdf Dava Sobel PDF Online Dava Sobel Mobi Online Dava Sobel Reading Online Dava SobelBest Facebook For Dummies By Carolyn Abram
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