Longitude (book)

Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time

First edition (US)
Author	Dava Sobel
Genre	Popular Science
Publisher	Walker & Company (US) Fourth Estate (UK)
Publication date	1995
Pages	191
ISBN	978-0-8027-1529-6
OCLC	183660066

Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time is a 1995 best-selling book by Dava Sobel about John Harrison, an 18th-century clockmaker who created the first clock (chronometer) sufficiently accurate to be used to determine longitude at sea—an important development in navigation. The book was made into a television series entitled Longitude.^[1] In 1998, The Illustrated Longitude was published, supplementing the earlier text with 180 images of characters, events, instruments, maps and publications.