John Hadley

John Hadley (16 April 1682 – 14 February 1744) was an English mathematician, and laid claim to the invention of the octant, two years after Thomas Godfrey claimed the same.

For other people named John Hadley, see John Hadley (disambiguation).

John Hadley
Born(1682-04-16)16 April 1682
Bloomsbury, London
Died14 February 1744(1744-02-14) (aged 61)
East Barnet, Hertfordshire
NationalityEnglish
Known forOctant
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