The Iron Pendulum Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of The Iron Pendulum book. This book definitely worth reading, it is an incredibly well-written.
Julia Webster and Hugo del Fuego are missing from their third floor apartment in Bagley. The grisly display discovered in their home leaves Detectives Perkins and Jones with little evidence to follow and, as more remains turn up, the pressure mounts to find the killer. Time is the key element in solving a case riddled with dead ends and a strange family hiding its true evil behind the façade of money and power. Can they unravel the secrets hidden behind the closed doors and will it be enough to solve the case and rescue the couple in time?
When we read the works of Homer, or Virgil, or Plato, or turn to the later productions of Dante, of Shakespeare, of Milton, and the host of writers and poets who have done so much to instruct and amuse us, and to make our lives good and agreeable, we are apt to look with some disappointment upon present times. And when we turn to the field of art and compare Greek statues and Gothic or Renaissance architecture with our modern efforts, we must feel bound to admit our inferiority to our ancestors. And this leads us perhaps to question whether our age is the equal of those which have gone before, or whether the human intellect is not on the decline. This feeling, however, proceeds from a failure to remember that each age of the world has its peculiar points of strength, as well as of weakness. During one period that self-denying patriotism and zeal for the common good will be developing, which2 is necessary for the formation of society. During another, the study of the principles of morality and religion will be in the ascendant. During another the arts will take the lead; during another, poetry, tragedy, and lyric poetry and prose will be cultivated; during another, music will take its turn, and out of rude peasant songs will evolve the harmony of the opera. To our age is reserved the glory of being easily the foremost in scientific discovery.
Lavishly illustrated with seventy-four color plates and fifty black-and-white photographs and drawings, Never for Want of Powder tells the story of a world-class munitions factory constructed by the Confederacy in 1861, the only large-scale permanent building project undertaken by a government often characterized as lacking modern industrial values. In this comprehensive examination of the powder works, five scholars--a historian, physicist, curator, architectural historian, and biographer--bring their combined expertise to the task of chronicling gunpowder production during the Civil War. In doing so, they make a major contribution to understanding the history of wartime technology and Confederate ingenuity. Early in the war President Jefferson Davis realized the Confederacy's need to supply its own gunpowder. Accordingly Davis selected Col. George Washington Rains to build a gunpowder factory. An engineer and West Point graduate, Rains relied primarily on a written pamphlet rather than on practical experience in building the powder mill, yet he succeeded in designing a model of efficiency and safety. He sited the facilities at Augusta, Georgia, because of the city's central location, canal transportation, access to water power, railroad facilities, and relative security from attack. As much a story of people as of machinery, Never for Want of Powder recounts the ingenuity of the individuals involved with the project. A cadre of talented subordinates--including Frederick Wright, C. Shaler Smith, William Pendleton, and Isadore P. Girardey--assisted Rains to a degree not previously appreciated by historians. This volume also documents the coordinated outflow of gunpowder and ammunition, and Rains's difficulty in preparing for the defense of Augusta. Today a lone chimney along the Savannah River stands as the only reminder of the munitions facility that once occupied that site. With its detailed reproductions of architectural and mechanical schematics and its expansive vista on the Confederacy, Never for Want of Powder restores the Augusta Powder Works to its rightful place in American lore.
The Shortt clock, made in the 1920s, is the most famous accurate clock pendulum ever known, having an accuracy of one second per year when kept at nearly constant temperature. Almost all of a pendulum clock's accuracy resides in its pendulum. If the pendulum is accurate, the clock will be accurate. In this book, the author describes many scientific aspects of pendulum design and operation in simple terms with experimental data, and little mathematics. It has been written, looking at all the different parts and aspects of the pendulum in great detail, chapter by chapter, reflecting the degree of attention necessary for making a pendulum run accurately. The topics covered include the dimensional stability of different pendulum materials, good and poor suspension spring designs, the design of mechanical joints and clamps, effect of quartz on accuracy, temperature compensation, air drag of different bob shapes and making a sinusoidal electromagnetic drive. One whole chapter is devoted to simple ways of improving the accuracy of ordinary low-cost pendulum clocks, which have a different construction compared to the more expensive designs of substantially well-made ones. This book will prove invaluable to anyone who wants to know how to make a more accurate pendulum or pendulum clock.
Mathematics at the Meridian by Raymond Flood,Tony Mann,Mary Croarken Pdf
Greenwich has been a centre for scientific computing since the foundation of the Royal Observatory in 1675. Early Astronomers Royal gathered astronomical data with the purpose of enabling navigators to compute their longitude at sea. Nevil Maskelyne in the 18th century organised the work of computing tables for the Nautical Almanac, anticipating later methods used in safety-critical computing systems. The 19th century saw influential critiques of Charles Babbage’s mechanical calculating engines, and in the 20th century Leslie Comrie and others pioneered the automation of computation. The arrival of the Royal Naval College in 1873 and the University of Greenwich in 1999 has brought more mathematicians and different kinds of mathematics to Greenwich. In the 21st century computational mathematics has found many new applications. This book presents an account of the mathematicians who worked at Greenwich and their achievements. Features A scholarly but accessible history of mathematics at Greenwich, from the seventeenth century to the present day, with each chapter written by an expert in the field The book will appeal to astronomical and naval historians as well as historians of mathematics and scientific computing.
