To have a type of abacus to use.
John Napier
logarithmic device called as napier bones
Napier's bones, used for calculating products and quotients of numbers was also called Rabdology. Napier first published his method in 1617.
John Napier, a Scottish mathematician, is best known for three significant contributions: Invention of Logarithms (1614) - Napier introduced the concept of logarithms in his work "Mirifici Logarithmorum Canonis Descriptio," which simplified complex calculations and laid the groundwork for modern mathematics. Creation of Napier's Bones (1617) - He developed a calculating device known as Napier's Bones, which allowed for easier multiplication and division using a set of rods inscribed with numbers. Contributions to the Calculation of Sines - Napier's work on trigonometry and the calculation of sines improved astronomical calculations and was instrumental in navigation and astronomy.
John Napier was famous for his work with logarithms.
John Napier
Napier's Bones. It was a type of abacus.
Because he wanted a simple calculating device. (It's "bones" actually.)
Napier's Bones, a system similar to an abacus which assists in the calculation of products and quotients, and also referred to as Rabdology, was first mentioned as a new invention by Napier in 1617 in Edinburgh, Scotland.
John Napier, renowned for his work involving logarithms was born in 1550 and died in 1617.
John Napier invented the Napier`s bone in 1617
In 1614, John Napier published his invention of logarithms.
John Napier
in 1614 john Napier invented logarithms and a device called NAPIER,s bones
logarithmic device called as napier bones
John Napier's calculating machine invention is called "Napier's Bones."
The probable cause of Napier's death was complications arising from gout, although this can now never be known with certainty.