This first English translation of Napier's Rabdologia provides a clear and readable introduction to a group of physical calculating devices, which, long overshadowed by Napier's logarithms, have their own intrinsic interest and charm. "The tasks which fill'd beginners with dismayThis little book has banish'd clear away." John Napier had already discovered and published an epochmaking treatise on logarithms when in 1617 he turned to "rabdology" or rod-reckoning as yet another means by which to confront the problem of simplifying the huge calculations involved in multiplication, division, and the extraction of roots. This first English translation of Napier's Rabdologia provides a clear and readable introduction to a group of physical calculating devices, which, long overshadowed by Napier's logarithms, have their own intrinsic interest and charm. Book I describes the first device, a set of rods known as "Napier's Bones," which were inscribed with numbers forming multiplication tables and used in conjunction with pencil and paper. Book 11 presents a series of simple calculations that readers can solve by using the rods, and a series of tables of ratios useful for division. Napier then describes the second mechanical device for calculation, a forerunner of the modern calculator that he named promptuary or "place where things are stored ready for use." The third device, similar to a chessboard, allowed calculations to be performed by moving counters around the squares. Observing that the numbers had to be represented in what would now be called binary form, Napier provides instructions for changing from ordinary to binary numbers and back again, a method that worked equally well for multiplication and division and that had a particularly elegant symmetry when applied to the extraction of square roots.

In a world where numbers are magic, Dom searches for an item of immense power while on the run from a powerful enemy.

Presents a biographical sketch of Scottish mathematician John Napier (1550-1617), compiled as part of the MacTutor History of Mathematics Archive of the School of Mathematics and Statistics at the University of Saint Andrews in Scotland. Highlights Naimark's work on logarithms.

The most comprehensive account of the mathematician's life and work John Napier (1550–1617) is celebrated today as the man who invented logarithms—an enormous intellectual achievement that would soon lead to the development of their mechanical equivalent in the slide rule: the two would serve humanity as the principal means of calculation until the mid-1970s. Yet, despite Napier's pioneering efforts, his life and work have not attracted detailed modern scrutiny. John Napier is the first contemporary biography to take an in-depth look at the multiple facets of Napier’s story: his privileged position as the eighth Laird of Merchiston and the son of influential Scottish landowners; his reputation as a magician who dabbled in alchemy; his interest in agriculture; his involvement with a notorious outlaw; his staunch anti-Catholic beliefs; his interactions with such peers as Henry Briggs, Johannes Kepler, and Tycho Brahe; and, most notably, his estimable mathematical legacy. Julian Havil explores Napier’s original development of logarithms, the motivations for his approach, and the reasons behind certain adjustments to them. Napier’s inventive mathematical ideas also include formulas for solving spherical triangles, "Napier’s Bones" (a more basic but extremely popular alternative device for calculation), and the use of decimal notation for fractions and binary arithmetic. Havil also considers Napier’s study of the Book of Revelation, which led to his prediction of the Apocalypse in his first book, A Plaine Discovery of the Whole Revelation of St. John—the work for which Napier believed he would be most remembered. John Napier assesses one man’s life and the lasting influence of his advancements on the mathematical sciences and beyond.

For the first time, all five of John Napier’s works have been brought together in English in a single volume, making them more accessible than ever before. His four mathematical works were originally published in Latin: two in his lifetime (1550–1617), one shortly after he died, and one over 200 years later. The authors have prepared three introductory chapters, one covering Napier himself, one his mathematical works, and one his religious work. The former has been prepared by one of Napier’s descendants and contains many new findings about Napier’s life to provide the most complete biography of this enigmatic character, whose reputation has previously been overshadowed by rumour and speculation. The latter has been written by an academic who was awarded a PhD for his thesis on Napier at the University of Edinburgh, and it provides the most lucid and coherent coverage available of this abstruse and little understood work. The chapter on Napier’s mathematical texts has been authored by an experienced and respected academic, whose recent works have specialised in the history of mathematics and whose Journey through Mathematics was selected in March of 2012 as an Outstanding Title in Mathematics by Choice magazine, a publication of the American Library Association. All three authors have revisited the primary sources extensively and deliver new insights about Napier and his works, whilst revising the many myths and assumptions that surround his life and character.

“Fantastical, thoughtful, and un-put-downable, I flew through Stormsong and want the third in the series NOW.” —Elizabeth Hoyt After spinning an enthralling world in Witchmark, the winner of the World Fantasy Award for best novel that was praised as a “can't-miss debut” by Booklist, and as “thoroughly charming and deftly paced” by the New York Times, C. L. Polk continues the Kingston Cycle in Stormsong. Magical cabals, otherworldly avengers, and impossible love affairs conspire to create a book that refuses to be put down. Dame Grace Hensley helped her brother Miles undo the atrocity that stained her nation, but now she has to deal with the consequences. With the power out in the dead of winter and an uncontrollable sequence of winter storms on the horizon, Aeland faces disaster. Grace has the vision to guide her parents to safety, but a hostile queen and a ring of rogue mages stand in the way of her plans. There's revolution in the air, and any spark could light the powder. What's worse, upstart photojournalist Avia Jessup draws ever closer to secrets that could topple the nation, and closer to Grace's heart. Can Aeland be saved without bloodshed? Or will Kingston die in flames, and Grace along with it? At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

From Ben and Erin Napier, the stars of the hit HGTV show Home Town, comes Make Something Good Today, a memoir that tells us all to seek out the good in life, celebrate the beauty of family and friends, and prosper within our communities because everything we need in life to be happy, is within our grasp. Long before their hugely popular TV show, an expanding family, or demolition day on their dream home, Erin began keeping a daily online journal to help her stay focused on the positive and count her blessings in life. She never expected that her depictions of small-town life in the tiny swath of Mississippi where she Ben call home would catch the eye of a television producer and set them off on the journey of a lifetime. Make Something Good Today offers a behind-the-scenes glimpse into the struggles and triumphs of a couple that America has come to know and love for their easy humor, adoring relationship, and ability to utterly transform a place into something beautiful and personal. This is the poignant story of how Erin and Ben took a small, tight-knit town into their own hands (literally) and used ingenuity, community, and authenticity to rebuild a once-thriving American Main Street. And how, by combining Ben’s carpentry skills with Erin’s design eye, Home Town is making it clear to us all that small-town living can feel as big as you make it. Complete with family photographs, Erin’s hand-painted sketches, and never-before-heard personal stories, this inspirational memoir reminds us all not to give up hope that great love stories are possible, big things can bloom in small towns, and there is always magic in the ordinary if you know where to look for it.