Crisis of Classical Physics. Wave-particle duality. Postulates of Quantum Mechnics. Observables and operators, Schrödinger equation in one dimension: potential wells, tunnel effect, harmonic oscillator. WKB approximation. Schrödinger equation in three dimensions: central potentials, hydrogen atom. Angulare momentum. Spin and mgnetic moment. Identical particles. Time-independent perturbation theory. Time-dependent perturbation theory. Variational Methods.