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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.
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hadley octant london john east barnet telescopes thomas biography also born bloomsbury hertfordshire 1744 godfrey celestial parabolic died known english
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| John Hadley | Born | (1682-04-16)16 April 1682 Bloomsbury, London | 1.00 | infobox |
| John Hadley | Died | 14 February 1744(1744-02-14) (aged 61) East Barnet, Hertfordshire | 1.00 | infobox |
| John Hadley | Known for | Octant | 1.00 | infobox |
| the Davis quadrant | instance of | The octant proved extremely valuable for navigation and displaced the use of other instruments | 0.80 | text |
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