Early explorers

The video discusses the evolution of navigation techniques from the 15th to the 18th century. Initially, explorers used dead reckoning, a method based on previous positions, speed, and direction, to calculate longitude. This method was inaccurate, leading to the development of chronometers in the 18th century, which allowed explorers to determine longitude by comparing local time with the time at a known location, such as the Greenwich Observatory. Today, GPS technology provides precise navigation, but the spirit of adventure in sea exploration remains.

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