Back جون هادلي Arabic جون هادلى ARZ John Hadley Catalan John Hadley German Τζων Χάντλεϋ Greek John Hadley Spanish John Hadley Finnish John Hadley French John Hadley Galician John Hadley Hungarian

John Hadley

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

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.[1]

  1. ^ Correspondence between William Penn and James Logan. Philadelphia: J. B. Lippincott & Co. 1870.

Developed by StudentB