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When clearing out his mothers fl at Stephen discovers a tin of old photographs under her bed. Each image evokes a memory of childhood and we get to meet the people who inhabit those memories wayward friends and sensible friends, strict teachers and hopeless teachers, ugly girls and gorgeous girls, Aunts who are not Aunts and Uncles who are not Uncles and a grandfather who revels in the art of mischief. In this funny and sometimes moving novella Stephen Mitchell wonders whether our memories can really be relied upon to provide an accurate reconstruction of our childhood years and especially those of an ordinary child growing up in the North of England in the 1960s.
A New York Times bestseller! “Smart and funny…warm and rewarding.” —Booklist (starred review) “A compelling and quirky tale of love and negotiating early adulthood in New York City.” —School Library Journal From the New York Times bestselling author of Emergency Contact, which Rainbow Rowell called “smart and funny,” comes a “captivating” (The New York Times) romance about how social media influences relationships every day. On paper, college dropout Pablo Rind doesn’t have a whole lot going for him. His graveyard shift at a twenty-four-hour deli in Brooklyn is a struggle. Plus, he’s up to his eyeballs in credit card debt. Never mind the state of his student loans. Pop juggernaut Leanna Smart has enough social media followers to populate whole continents. The brand is unstoppable. She graduated from child stardom to become an international icon, and her adult life is a queasy blur of private planes, step-and-repeats, aspirational hotel rooms, and strangers screaming for her just to notice them. When Leanna and Pablo meet at 5:00 a.m. at the bodega in the dead of winter it’s absurd to think they’d be A Thing. But as they discover who they are, who they want to be, and how to defy the deafening expectations of everyone else, Lee and Pab turn to each other. Which, of course, is when things get properly complicated.
One of the first books to approach magnetism from a metal physics perspective, Permanent Magnetism presents research ideas that are being translated into commercial reality for ferrite and Nd-Fe-B magnets, and follows the discovery of interstitial, intermetallic materials. Written by well-known authors, the book contains a comprehensive yet concise treatment of the fundamental theory underlying permanent magnetism and illustrates applications with modern, permanent magnetic materials, including ceramics and intermetallic compounds. Each chapter contains worked examples to reinforce applications and the appendices include detailed mathematics and tabular data on material properties.
Co-authored by a world-renowned expert in the field, Permanent Magnet Motor Technology: Design and Applications, Second Edition demonstrates the construction of PM motor drives and supplies ready-to-implement solutions for common roadblocks. The author presents fundamental equations and calculations to determine and evaluate system performance, efficiency, and reliability; explores modern computer-aided design of PM motors, including the finite element approach; and covers how to select PM motors to meet the specific requirements of electrical drives. The numerous examples, models, and diagrams provided in each chapter give the reader a clear understanding of motor operations and characteristics.
This concise book presents the basic concepts of magnetism and magnetic properties pertinent to permanent magnetic materials. Emphasis is placed on hexaferrite materials for permanent magnet applications, with M-type ferrites as the focal point. The relatively high metallicity of magnetic materials for practical applications imposes limitations for their efficient use. Accordingly, magnetic oxides with ferromagnetic properties emerged as the most widely used magnetic materials for practical applications, owing to their characteristic high resistivity and low eddy current losses, chemical stability, simplicity of production in mass quantities, and other favorable characteristics. An important class of these oxides is the class of hexagonal ferrites developed in the early 1950’s, which dominated the world market of permanent magnet applications since the end of the 1980’s. Among these ferrites, the magnetoplumbite (M-type) hexaferrite, is produced nowadays in large quantities at very competitive low prices, thus providing the permanent magnet market with probably the most cost-effective magnetic material.
Introduction to Magnetochemistry provides an introduction to the more important aspects of magnetochemistry. The measurement of magnetic moment has been one of the most consistently useful to coordination chemists. For teaching purposes it provides a simple method of illustrating the ideas of electronic structure, and in research it can provide fundamental information about the bonding and stereochemistry of complexes. The book contains six chapters covering topics such as free atoms and ions, transition metal complexes, crystal field theory, second and third row transition metal complexes, antiferromagnetism, and spin-pairing of electrons. The final chapter describes important experimental methods and then to shows briefly the way in which the problems of interpretation may be tackled.