Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time – Dava Sobel – 1995, Walker & Company
What the Book Explores
Dava Sobel’s Longitude recounts the centuries-long quest to determine longitude at sea. Prior to accurate methods for calculating longitude, navigation relied heavily on latitude (easily determined by the position of the sun) and dead reckoning – a method prone to cumulative errors. The book centers on John Harrison, a self-educated clockmaker, and his relentless pursuit of a sea clock capable of maintaining accurate time despite the rocking and temperature variations of a ship at sea. It details the technical challenges, the resistance from established scientific institutions, and the political and economic implications of solving this crucial navigational problem.
Historical / Cultural Context
The inability to determine longitude accurately had profound consequences for maritime trade, exploration, and naval power from the Age of Discovery through the 18th century. Shipwrecks, lost fortunes, and prolonged voyages were commonplace. The British government, recognizing the importance of longitude for maintaining naval dominance and facilitating trade, offered a series of prizes for a solution. This spurred a competition, largely dominated by astronomers who favored celestial solutions. Harrison’s mechanical approach was initially met with skepticism, reflecting a broader cultural tension between practical craftsmanship and theoretical science. The story unfolds during a period of significant scientific advancement and imperial expansion, where precise knowledge of location was inextricably linked to national power.
Who This Book Is For
This work appeals to a broad audience, encompassing those interested in the history of science, navigation, and the lives of remarkable individuals. While it delves into complex technical details of clockmaking, Sobel presents them in an accessible manner, making the book enjoyable for readers without a scientific background. It’s particularly suited to those curious about the intersection of ingenuity, perseverance, and the cultural forces that shape scientific progress. The book touches on themes of social class and the often-difficult path of the self-taught.
Further Reading
- The Watchmaker’s Apprentice by June Goodfield: Further explores the history of timekeeping.
- Navigating the World by Steve Roud: Provides a broader history of navigation techniques.
- Isaac’s Storm by Erik Larson: Details a tragic example of the consequences of inaccurate weather prediction and navigational errors.
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