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 (.....
• Alt. of Napier`s rods • Alt. of Napier`s rods
(from the article `Napier, John`) ...Virgulas Libri Duo (Study of Divining Rods, or Two Books of Numbering by Means of Rods, 1667); in this he described ingenious methods of ...
[n] - a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier
Napier`s rods noun a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier
a form of multiplication table originally marked on sticks of bone or ivory that could be rearranged to carry out the operations of multiplication or division. Also called