John Harrison (scientist)

John Harrison was an 18th-century British clockmaker and scientist who revolutionized navigation by solving the problem of accurate longitude measurement at sea. His development of highly precise marine chronometers allowed sailors to determine their east-west position accurately, greatly enhancing navigation safety and efficiency. Harrison’s work overcame the limitations of earlier methods affected by ship movement and changing conditions. His innovations earned him recognition from the British government, and his chronometers played a crucial role in maritime exploration and trade. Harrison’s contributions are considered foundational to modern timekeeping and navigation technology.