Chapter 1 The Heritage of Modern Physics 1 Chapter 2 Introduction to Relativity 45 Chapter 3 Relativity and Four Vectors 73 Chapter 4 Atoms and Molecules 97 Chapter 5 The Origin of the Quantum Theory 117 Chapter 6 Electrons and the Photoelectric Effect149 Chapter 7 X-rays 171 Chapter 8 Radioactivity and the Nuclear Atom 203 Chapter 9 Spectral Lines and the Bohr Model 2…