Introduction to Special Relativity.- Michelson-Morley Experiment and Lorentz Transformations.- Relativistic Kinematics.- Introduction to Quantum Physics.-The Photoelectric Effect.- Bohr's Quantum Theory.- De Broglie's Interpretation.- Schrodinger's Equation.- The Potential Barrier.- Quantum Wells and Energy Levels.- The Harmonic Oscillator.- Periodic Potentials and Band Spectra.- The Schrodinger Equation in a Central Potential.- Introduction to the Statistical Theory of Matter.- Thermal Equilibrium by Gibbs' Method.- The Pressure and the Equation of State.- A Three Level System.- The Grand Canonical Ensemble and the Perfect Quantum Gas.