Mathematician:John Napier

Scots mathematician famous for his development of natural logarithms.

His name is spelt variously as Jhone, and Napeir, Nepair, Nepeir, Neper, Napare, Naper, Naipper.

Nationality
Scottish

History

 * Born: 1550, Merchiston Castle, Edinburgh, Scotland
 * Died: 4 April 1617, Edinburgh, Scotland

Theorems and Definitions

 * Napier's Bones
 * Natural (Napierian) logarithms
 * Napier's Constant (better known as Euler's Number)
 * Napier's Rules for Right Angled Spherical Triangles

Books and Papers

 * 1593: Plaine Discovery of the Whole Revelation of St. John
 * 1614: Mirifici logarithmorum canonis descriptio (in which natural logarithms appear)
 * 1617: Rabdologiae (in which Napier's Bones are described)

Also see

 * : Chapter $5$: Eternal Triangles