Book excerpt: Introduction to the Physics of the Earth's Interior describes the structure, composition and temperature of the deep Earth in one comprehensive volume. This new edition of a successful textbook has been enlarged and fully updated, taking into account the considerable experimental and theoretical progress recently made in understanding the inner structure of the Earth. Like the first edition, this will be a useful textbook for graduate and advanced undergraduate students in geophysics and mineralogy. It will also be of great value to researchers in earth sciences, physics and materials sciences.