Part I Elementary Particles, Nuclei and Atoms. 1 Matter-wave Interferences with Molecules. 2 Neutron Interferometry. 3 Analysis of a Stern-Gerlach Experiment. 4 Spectroscopic Measurements on a Neutron Beam. 5 Measuring the Electron Magnetic Moment Anomaly. 6 Atomic Clocks. 7 The Spectrum of Positronium. 8 Neutrino Transformations in the Sun. 9 The Hydrogen Atom in Crossed Fields. 10 Energy Loss of Ions in Matter. Part II Quantum Entanglement and Measurement. 11 The EPR Problem and Bell's Inequality. 12 Quantum Correlations in a Multi-Particle System. 13 A Non-Destructive Bomb Detector. 14 Direct Observation of Field Quantization. 15 Schrödinger's Cat. 16 Quantum Cryptography. 17 Ideal Quantum Measurement. 18 The Quantum Eraser. 19 A Quantum Thermometer. 20 Laser Cooling and Trapping. Part III Complex Systems. 21 Exact Results for the Three-Body Problem. 22 Properties of a Bose-Einstein Condensate. 23 Quantized Vortices. 24 Motion in a Periodic Potential and Bloch Oscillations. 25 Magnetic Excitons. 26 A Quantum Box. 27 Colored Molecular Ions. 28 Hyperfine Structure in Electron Spin Resonance. 29 Probing Matter with Positive Muons. 30 Quantum Reflection of Atoms from a Surface. Part IV Appendix. 31 Memento of Quantum Mechanics.