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Napier's bones is a manually operated calculating device created by John Napier of Merchiston, Scotland for the calculation of products and quotients of numbers. The method was based on lattice multiplication , and also called rabdology , a word invented by Napier.
The first device, which by then was already popularly used and known as Napier's bones, was a set of rods inscribed with the multiplication table. Napier coined the word rabdology (from Greek ῥάβδος [rhabdos], rod and λόγoς [logos] calculation or reckoning) to describe this technique. The rods were used to multiply, divide and even ...
Statue of John Napier, Scottish National Portrait Gallery. John Napier of Merchiston (/ ˈ n eɪ p i ər / NAY-pee-ər; [1] Latinized as Ioannes Neper; 1 February 1550 – 4 April 1617), nicknamed Marvellous Merchiston, was a Scottish landowner known as a mathematician, physicist, and astronomer.
Title page of John Napier's Mirifici Logarithmorum Canonis Descriptio from 1614, ... The history of logarithms is the story of a correspondence (in modern terms, ...
The Promptuary and the Napier's Bones at the National Archaeological Museum of Spain in Madrid. An example of the Promptuary is in the National Archaeological Museum of Spain in Madrid. It also includes an example of Napier's bones. The apparatus is a box of wood with inlays of bone.
From the end of the Roman occupation through the Anglo-Saxon and Viking invasions - a new way of testing DNA in ancient bones could force a rethink of key moments in Britain's early history, say ...
The history of computing hardware spans the developments from early devices used for simple calculations to today's complex computers, encompassing advancements in both analog and digital technology. The first aids to computation were purely mechanical devices which required the operator to set up the initial values of an elementary arithmetic ...
Erin and Ben Napier on the porch of their most dramatic renovation yet. Frank Frances Leaving your small town to pursue your dreams is a classic move—but returning home can be even more fulfilling.