| List of the Most Important Symbols Used | |
| 1 | Introduction | 1 |
| 2 | The Mass and Size of the Atom | 5 |
| 3 | Isotopes | 27 |
| 4 | The Nucleus of the Atom | 37 |
| 5 | The Photon | 49 |
| 6 | The Electron | 69 |
| 7 | Some Basic Properties of Matter Waves | 81 |
| 8 | Bohr's Model of the Hydrogen Atom | 95 |
| 9 | The Mathematical Framework of Quantum Theory | 125 |
| 10 | Quantum Mechanics of the Hydrogen Atom | 153 |
| 11 | Lifting of the Orbital Degeneracy in the Spectra of Alkali Atoms | 171 |
| 12 | Orbital and Spin Magnetism. Fine Structure | 181 |
| 13 | Atoms in a Magnetic Field: Experiments and Their Semiclassical Description | 205 |
| 14 | Atoms in a Magnetic Field: Quantum Mechanical Treatment | 223 |
| 15 | Atoms in an Electric Field | 251 |
| 16 | General Laws of Optical Transitions | 281 |
| 17 | Many-Electron Atoms | 297 |
| 18 | X-Ray Spectra, Internal Shells | 309 |
| 19 | Structure of the Periodic System. Ground States of the Elements | 323 |
| 20 | Nuclear Spin, Hyperfine Structure | 347 |
| 21 | The Laser | 373 |
| 22 | Modern Methods of Optical Spectroscopy | 385 |
| 23 | Progress in Quantum Physics: A Deeper Understanding and New Applications | 403 |
| 24 | Fundamentals of the Quantum Theory of Chemical Bonding | 425 |
| App. A | The Dirac Delta Function and the Normalisation of the Wavefunction of a Free Particle in Unbounded Space | 447 |
| App. B | Some Properties of the Hamiltonian Operator, Its Eigenfunctions and its Eigenvalues | 451 |
| App. C | Derivation of Heisenberg's Uncertainty Relation | 452 |
| Solutions to the Problems | 455 |
| Bibliography of Supplementary and Specialised Literature | 485 |
| Subject Index | 493 |
| Fundamental Constants of Atomic Physics | |