Napier also invented a calculating device known as Napier's bones in 1617 and made common use of decimal multiplications and divisions. The device itself does not use logarithms, but rather is a convenient tool to reduce multiplication and division to a sequence of simple addition and subtraction operations. The method employed by Napier's bones was based on Arab mathematics and Fibonacci's Liber Abaci.
John NapierRelated topics
abacus calculating common decimal known mathematics multiplication sequence simple subtraction use Napier bones divisions operationsRelated quotes
As parents, we can do a great deal to further this goal by helping our children develop alternative ways of knowing the world verbally/analytically and visually/spatially. During the crucial early years, parents can help to shape a child's life in such a way that words do not completely mask other kinds of reality. My most urgent suggestions to parents are concerned with the use of words, or rather, not using words.
Betty Edwards
We cannot possibly capture reality based on our limited perceptions and insignificant power. Therefore, we want to use our intelligence to sustain the mind properly, in order to prevent it from being dragged under by the senses. We want to use our intelligence to open ourselves up to receiving divine intervention. We want to use our intelligence to truly understand how to become a genuine lover of the Lord.
Bhakti Tirtha Swami
A good deal of my research in physics has consisted in not setting out to solve some particular problem, but simply examining mathematical equations of a kind that physicists use and trying to fit them together in an interesting way, regardless of any application that the work may have. It is simply a search for pretty mathematics. It may turn out later to have an application. Then one has good luck. At age 78.
Paul Dirac
I would rather be ashes than dust! I would rather that my spark should burn out in a brilliant blaze than it should be stifled by dry-rot. I would rather be a superb meteor, every atom of me in magnificent glow, than a sleepy and permanent planet. The function of man is to live, not to exist. I shall not waste my days trying to prolong them. I shall use my time.
Jack London
...the use of the Disme ...to teach such as doe not already know the use and practize of Numeration, and the foure principles of common Arithmetick, in whole numbers, namely, Addition, Substraction, Multiplication, & Division, together with the Golden Rule, sufficient to instruct the most ignorant in the usuall practize of this Art of Disme or Decimall Arithmeticke.
Simon Stevin