Mathematician:John Hadley/1

Mathematician

English mathematician who invented the sextant, independently of Thomas Godfrey.

Constructed the first practical working reflecting telescope.

Nationality

English

History

• Born: 16 April 1682 in Bloomsbury, London
• Died: 14 February 1744 in East Barnet, Hertfordshire

Inventions

• Sextant

Publications

• 1731: Description of a new instrument for taking angles
• 1734: A description of a new instrument for taking the latitude or other altitude at sea

Sources

• John J. O'Connor and Edmund F. Robertson: "1": MacTutor History of Mathematics archive

• 2008: Ian Stewart: Taming the Infinite ... (previous) ... (next): Chapter $6$: Curves and Coordinates: Coordinate geometry today