Napier's bones is a manually-operated calculating device created by John Napier of Merchiston for calculation of products and quotients of numbers. The method was based on Arab mathematics and the lattice multiplication used by Matrakci Nasuh in the Umdet

---

Napier's bones is a manually-operated calculating device created by John Napier of Merchiston for calculation of products and quotients of numbers. The method was based on Arab mathematics and the lattice multiplication used by Matrakci Nasuh in the Umdet-ul Hisab and Fibonacci's work in his Liber Abaci. The technique was also called Rabdology. Napier published his version in 1617 in Rabdologiae.

---

Size: 4500px × 3096px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, 1617, 17th, abacus, adding, bones, calculating, calculation, calculator, century, device, famous, historic, historical, history, important, instrument, invention, john, lattice, machine, math, mathematical, mathematics, mechanical, multiplication, napier, napiers, notable, rabdology, renaissance, science, tool