Key Ideas

1. Longitude is a book written by Dava Sobel that explores the history and invention of the marine chronometer.

2. The book focuses on the life and work of the 18th-century clockmaker, John Harrison, who dedicated his life to solving the longitude problem.

3. The longitude problem refers to the challenge of determining a ship's exact east-west position at sea, which was crucial for safe and accurate navigation.

4. The concept of longitude and its importance in navigation has been recognized for centuries, but accurate measurement remained elusive until Harrison's invention.

5. Before the i....
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Quiz