Engineers
John Hadley
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English mathematician who laid claim to the invention of the octant, the sextant's direct forerunner, around 1731, two years after Thomas Godfrey claimed the same principle independently.
Facts
Cross-Tradition Connections
Held Differently
Sextant, Inventions Why this is disputed. Independently claimed the same octant/sextant principle circa 1731 alongside Thomas Godfrey (co-claimant not wired to a separate entity this pass; recorded as a gap).
Sources
1. John Hadley (Wikipedia)
Wikimedia FoundationLead sectionQuote, Lead section
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.
Sextant (Wikipedia)
WikipediaInvented: Sextant, History section (inventor attribution)Quote, Invented: Sextant, History section (inventor attribution)
The principle of the instrument was first implemented around 1731 by John Hadley and Thomas Godfrey.
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