Napier's bones is a manually-operated calculating device created by John Napier of Merchiston, Scotland for the calculation of products and quotients...
35 KB (2,897 words) - 22:45, 14 April 2024
was Ioannes Neper. John Napier is best known as the discoverer of logarithms. He also invented the so-called "Napier's bones" and made common the use...
33 KB (4,199 words) - 00:47, 24 August 2024
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...
4 KB (489 words) - 12:47, 8 April 2024
mathematician John Napier and described in his book Rabdologiae in which he also described Napier's bones. It is an extension of Napier's Bones, using two sets...
10 KB (1,578 words) - 04:59, 1 February 2022
advances were made until John Napier devised his numbering rods, or Napier's Bones, in 1617. Various forms of the Bones appeared, some approaching the...
69 KB (9,224 words) - 00:59, 17 August 2024
calculating rods known as Napier's bones (Scotland, 1617) and Genaille–Lucas rulers (France, late 1800s). Genaille–Lucas rulers Napier's bones Williams, Michael...
10 KB (1,364 words) - 01:52, 2 June 2024
Genaille, a French railway engineer, in 1891. The device is a variant of Napier's bones. By representing the carry graphically, the user can read off the results...
5 KB (475 words) - 19:40, 7 July 2024
setting out his theory of elliptic orbits. Napier's Bones, a multiplication device invented by John Napier (who dies on April 4), is described in his...
2 KB (152 words) - 16:41, 16 June 2024
adopted some of the ideas in the Organum from preexisting inventions like Napier's bones, almanacs, and his own Arca Musarithmica. Like other calculating devices...
7 KB (932 words) - 16:44, 5 April 2024
advertised in American newspapers starting at $3.98 each ($35.00 in 2023). Napier's bones – 1617 device for calculating products and quotients History of computing...
6 KB (577 words) - 00:55, 18 December 2023