This new edition updates readers with the latest concepts of crystallography in a clear, succinct manner, and describes their application in line and planar defects in crystalline materials, quasicrystals, and crystal interfaces. The coverage begins with a chapter on lattice geometry, followed by crystal systems and crystal structures. Extensively revised and updated, this new edition of a classic text presents a unified approach to crystallography and to the defects found within crystals. The book combines the classical and exact description of symmetry of a perfect crystal with the possible geometries of the major defects-dislocations, stacking faults, point defects, twins, interfaces and the effects of martensitic transformations. A number of important concepts and exciting new topics have been introduced in this second edition, including piezoelectricity, liquid crystals, nanocrystalline concepts, incommensurate materials and the structure of foamed and amorphous solids. The coverage of quasicrystalline materials has been extended, and the data tables, appendices and references have been fully updated. Reinforcing its unrivalled position as the core text for teaching crystallography and crystal defects, each chapter includes problem sets with brief numerical solutions at the end of the book. Detailed worked solutions, supplementary lecture material and computer programs for crystallographic calculations are provided online (http://booksupport.wiley.com). Crystallography and Crystal Defects, Second Edition is a valuable resource for senior undergraduate and graduate students of materials science, metallurgy, physics, chemistry, electrical, civil and mechanical engineering. It will also prove a useful and comprehensive reference source for advanced researchers.