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John Hadley |
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Hadley, John
Born Apr. 16, 1682, in Hartford, England; died Feb. 14, 1744, in East Barnet. English inventor and astronomer. Fellow (1717) and vice-president (1728) of the Royal Society of London. Hadley is credited with the invention of the sextant (1730–31), which is widely used in navigation. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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