Originally published by the American Institute of Physics as the Physics Vade Mecum, this third edition has been completely updated to reflect contemporary modern physics. It is a concise compilation of the most frequently used physics data and formulae with their derivations, and this edition contains six new chapters, with outdated chapters dropped, and new chapters added on atmospheric physics, electricity and magnetism, elementary particle physics, fluid dynamics, geophysics, nonlinear physics, particle accelerators, polymer physics, and quantum theory. A new, final chapter deals with practical laboratory data, while the references and bibliographies have been updated. The book should prove a valuable tool for researchers, professionals and students in physics as well as others who use physics data.