Question

ADVANTAGES AND DISADVANTAGES OF NAPIERS BONE

Answer 1

Answer:

Napier's bones is a manually-operated calculating device created by John Napier of Merchiston, Scotland 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 Rabdology, printed in Edinburgh, Scotland, dedicated to his patron Alexander Seton.

Using the multiplication tables embedded in the rods, multiplication can be reduced to addition operations and division to subtractions. More advanced use of the rods can even extract square roots. Note that Napier's bones are not the same as logarithms, with which Napier's name is also associated.

The complete device usually includes a base board with a rim; the user places Napier's rods inside the rim to conduct multiplication or division. The board's left edge is divided into 9 squares, holding the numbers 1 to 9. The Napier's rods consist of strips of wood, metal or heavy cardboard. Napier's bones are three-dimensional, square in cross section, with four different rods engraved on each one. A set of such bones might be enclosed in a convenient carrying case.

Answer 2

Napier’s bones is not actually a bone in any organism’s body as it sounds like. Napier’s is a calculating device like Abacus but made of bones. It got its name from its creator John Napier of Scotland. One of the confusing inventions of 16th century was Napier’s bones.

Rabdology is another name for the calculation that is done by these bones. Napier’s bones was actually used to calculate the products and quotients of number.