John Hadley

John Hadley was an English mathematician, and laid claim to the invention of the octant, two years after Thomas Godfrey claimed the same.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Who was born first?

• John Hadley and Johann Friedrich Böttger were born the same year
• John Hadley was born 3 years before Johann Maria Farina
• John Hadley was born 3 years before Bartolomeu de Gusmão
• John Hadley was born 5 years after Stephen Hales
• John Hadley was born 8 years after Jethro Tull

Timeline

1. Jethro TullMarch 30, 1674 – February 21, 1741
2. Stephen HalesSeptember 17, 1677 – January 4, 1761
3. Johann Friedrich BöttgerFebruary 4, 1682 – March 13, 1719
4. John Hadley (this page)April 16, 1682 – February 14, 1744
5. Bartolomeu de GusmãoDecember 18, 1685 – November 19, 1724
6. Johann Maria FarinaDecember 8, 1685 – November 25, 1766

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