Waves and physical optics, relativistic mechanics, experimental foundations of quantum mechanics, atomic structure, physics of molecules and solids, atomic nuclei and elementary particles. Along with CAS PY 211, 212, PY 313 completes a three-semester introductory sequence primarily intended for students of engineering. Effective Fall 2019, this course fulfills a single unit in each of the following BU Hub areas: Scientific Inquiry II, Critical Thinking.