The Physics of Atoms and Quanta is a thorough introduction to experiments and theory in this field. Every classical and modern aspect is covered and discussed in detail. As this text ends with the fundamentals of classical bonding, it leads into the second and more advanced book by the same authors entitled "Molecular Physics and Elements of Quantum Chemistry". This 6th edition includes new developments, such as new experiments on quantum entanglement, the Einstein-Podolsky-Rosen paradoxon, Bell's inequality, Schrodinger's cat, and decoherence; the quantum computer, quantum information, Bose-Einstein-Condensation, and the atom laser are also discussed. Here, the student will find 170 problems and their solutions, which make this book a real study text.