The book "Density Waves in Solids" by George Grüner, published by Taylor & Francis Group, provides a comprehensive overview of the field of density waves in solids. Density waves are broken symmetry states in metals, characterized by periodic spatial variations in charge or spin density, driven by electron-phonon or electron-electron interactions. The book covers the theoretical and experimental aspects of these phenomena, including the mean-field theory of charge and spin density wave transitions, fluctuation effects, collective excitations, and the interaction between density waves and impurities. It also discusses the electrodynamics and nonlinear transport properties of density waves, and highlights recent observations such as current oscillations and interference phenomena. The author emphasizes the close relationship between theory and experiment, making the book suitable for graduate and advanced undergraduate students in physics. The book is part of the "Frontiers in Physics" series, which aims to provide accessible and coherent accounts of rapidly developing fields in physics.The book "Density Waves in Solids" by George Grüner, published by Taylor & Francis Group, provides a comprehensive overview of the field of density waves in solids. Density waves are broken symmetry states in metals, characterized by periodic spatial variations in charge or spin density, driven by electron-phonon or electron-electron interactions. The book covers the theoretical and experimental aspects of these phenomena, including the mean-field theory of charge and spin density wave transitions, fluctuation effects, collective excitations, and the interaction between density waves and impurities. It also discusses the electrodynamics and nonlinear transport properties of density waves, and highlights recent observations such as current oscillations and interference phenomena. The author emphasizes the close relationship between theory and experiment, making the book suitable for graduate and advanced undergraduate students in physics. The book is part of the "Frontiers in Physics" series, which aims to provide accessible and coherent accounts of rapidly developing fields in physics.