Jean Picard
French astronomer and geodesist
Born
July 21st, 1620
405 years ago
Died
July 12th, 1682
343 years ago — 61 years old
Category
Scientists & Innovators
Country
France
Links & References
Contributed significantly to the field of astronomy and geodesy in the 17th century. Developed techniques to measure the size of the Earth and improvements in astronomical instruments. Participated in the measurement of a degree of latitude in 1669, which advanced the understanding of Earth’s circumference. Worked on refining telescopes and measuring celestial bodies.
Measured the degree of latitude in 1669
Contributed to the determination of Earth's size
Improved astronomical instrumentation
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