Longitude by Dava Sobel

Longitude by Dava Sobel

On its 10th anniversary, a gift edition of this classic book, with a forward by one of history's greatest explorers, and eight pages of color illustrations.

Anyone alive in the eighteeth century would have known that the logitude 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 scientific establishment of Europe--from Galileo to Sir Issac 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--a clock that would keep percise time at sea, something no clock had ever been able to do on land. Longitude is a dramatic human story of an epic scientific quest and Harrison's forty-year obsession with building his perfect timekeeper, known today as the chronometer. Full of heroism and chicanery, it is also a fascinating brief history of astronomy, navigation, and clockmaking, and opens a new window on our world.

Longitude, Galileo's Daughter, The Planets, and A More Perfect Heaven: How Copernicus Revolutionized the Universe are all written by Dava Sobel (born June 15, 1947). She has written for a variety of publications, including Discover, Harvard Magazine, Smithsonian, and The New Yorker. Her most memorable work at the Times required her to spend 25 days as a research subject in the chronophysiology lab at Montefiore Hospital, where she was kept safe by boarded-up windows and specially trained personnel. She also earned the 2004 Harrison Medal from the Worshipful Company of Clockmakers in England and the 2008 Klumpke-Roberts Prize from the Astronomical Society of the Pacific for improving public understanding and appreciation of astronomy. She graduated from the Bronx High School of Science in 1964 and has taught various science writing workshops at the university level, as well as a two-year residency at the University of California, Berkeley.