Multiplication, division and square roots.
John Napier
Napier's Bones. It was a type of abacus.
Because he wanted a simple calculating device. (It's "bones" actually.)
napiers bone
He invented the insert device, which was stuffed into a hole drilled in Napiers bones, which allowed a metal plank to go in. Although it wasnt a great improvement, his science in the insert device helped to the creation of Condoms by his son Samuel.
I do not think so.
napiers bone
Yes, Napier's bones are still used today, primarily as an educational tool to teach basic multiplication and numeric concepts. While modern calculators and computers have largely replaced manual calculation methods, the bones demonstrate early mathematical principles and the history of computation. They can also serve as a hands-on resource in classrooms to engage students in learning about mathematics.
well i think they just kept using it as it was hard back in those days so it just done it its self
Bones used in jumping jacks will be the bones of the arms and legs. The extremities will move when jumping jacks are done.
nothing
yes they do by using calccium