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Physical Acoustics V16
Physical Acoustics: Principles and Methods reviews the principles and methods of physical acoustics and covers topics ranging from relaxation processes in sound propagation in fluids to acoustic vibrational modes in quartz crystals, along with electron and phonon drag on mobile dislocations in metals at low temperatures. Two-pulse phonon echoes in solid-state acoustics and memory echoes in powders are also discussed. Comprised of seven chapters, this volume begins with a historical account of relaxation processes in sound propagation, followed by an analysis of acoustic vibrational modes in quartz crystals. The reader is then introduced to electron and phonon drag on mobile dislocations at low temperatures, together with two-pulse phonon echoes in solid-state acoustics and dynamic polarization echoes in powdered materials. The book also considers memory echoes in powders before concluding with an evaluation of acousto-optic transduction mechanisms used in fiber optic acoustic sensors, together with their practical implementation. This book will be of interest to physicists.
Physical Acoustics V14
Physical Acoustics: Principles and Methods, Volume XIV is a five-chapter text that covers significant studies on acoustic microscopy, sound propagation in liquid crystals, ultrasonic transducers, and ultrasonic flowmeters. The opening chapter discusses techniques of acoustic microscopy, aberration and resolution performance, acoustic lens transfer functions, antireflection coatings, and both transmission and reflection acoustic microscopy. The following chapter deals with the applications to the states called liquid crystals or anisotropic liquids, states in which the material flows but yet has a long-range order that makes it macroscopically anisotropic. The third chapter focuses on the pri...
Witch, Wicce, Mother Goose
The terrible history of witch hunts, torture and executions continues to fascinate. History of witches is a contested topic bound to attract attention. Fresh approach with new evidence will generate reviews and publicity. Written with the general reader in mind jargon-free and accessible. Full of illustrations. This is a compelling and contentious history of witches and witch-hunts in early modern Europe and America. Tens of thousands of people were persecuted and put to death as witches between 1400 and 1700 - the great age of witch-hunts. Why did the witch-hunts arise, flourish and decline during this period? What purpose did the persecutions serve? Who was accused, and what was the role o...
