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This book begins with an historical introduction covering the contributions of many distinguished crystallographers. From this follows a tutorial in crystal optics. Further chapters discuss the two main mechanisms of optical dissymmetry, the piezo-optic effect and the kinetic ordering of atoms. The book treats the literature comprehensively, but uses illustrations from the authors’ laboratories as the subjects of detailed analyses.
The advent of X-ray diffraction in the early twentieth century transformed crystallography from an area of scientific inquiry largely limited to physics, mineralogy, and mathematics, to a highly interdisciplinary field which now includes nearly all life and physical sciences as well as materials science and engineering. This book is a collection of works showcasing some of the most recent developments in the field of crystallography.
Building blocks are practical materials for playing, learning and working at kindergartens, schools, universities and companies. How did building blocks, which were primarily established as toys for children, come to be practical materials used in professional and educational settings? This study explores the historical implications of particular sets of building blocks in the interdisciplinary consolidation and transformation of techniques, materials, discourses and subjects. By mapping the genealogy of building blocks from Fröbel's »gifts« to their current systematization as interlocked blocks, this study proposes that building blocks should be understood not exclusively as concrete objects, but as the materiality of a combinatorial program, which delineates a modular system characterized by a code of composition, a context-neutrality and a semantic component.
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The contributions in this book explore several geologically significant sites and, in doing so, acknowledge and explore not just the geological exposures themselves, but also the people and issues that are fundamentally intertwined with the history of our science and its impact on our society. Through selective examples of outcrops and locales integral to the history of geology, we explore the evolution of modern geology, as well as the geodiversity and geoheritage of our planet. While the volume is far from comprehensive, the chapters contained herein detail a range for geoheritage value, scale of geoheritage sites and potential for geoheritage opportunities that will promote a broader, richer understanding of the complexity of the geoheritage of Earth. Importantly, many chapters offer a cautionary tale of sites almost lost to posterity and submit their take-away lessons for community mobilization towards geoheritage site protection.