Download e-book for iPad: John Napier: Life, Logarithms, and Legacy by Julian Havil

John Napier (1550–1617) is well known this present day because the guy who invented logarithms—an huge, immense highbrow fulfillment that will quickly bring about the improvement in their mechanical an identical within the slide rule: the 2 may serve humanity because the critical technique of calculation until eventually the mid-1970s. but, regardless of Napier's pioneering efforts, his existence and paintings haven't attracted certain sleek scrutiny. John Napier is the 1st modern biography to take an in-depth examine the a number of aspects of Napier’s tale: his privileged place because the 8th Laird of Merchiston and the son of influential Scottish landowners; his attractiveness as a magician who dabbled in alchemy; his curiosity in agriculture; his involvement with a infamous outlaw; his staunch anti-Catholic ideals; his interactions with such friends as Henry Briggs, Johannes Kepler, and Tycho Brahe; and, such a lot significantly, his estimable mathematical legacy.

Julian Havil explores Napier’s unique improvement of logarithms, the motivations for his process, and the explanations in the back of convinced changes to them. Napier’s artistic mathematical rules additionally comprise formulation for fixing round triangles, "Napier’s Bones" (a extra easy yet highly regarded substitute gadget for calculation), and using decimal notation for fractions and binary mathematics. Havil additionally considers Napier’s examine of the ebook of Revelation, which ended in his prediction of the Apocalypse in his first e-book, A Plaine Discovery of the total Revelation of St. John—the paintings for which Napier believed he will be such a lot remembered.

John Napier assesses one man’s lifestyles and the lasting impression of his developments at the mathematical sciences and beyond.