A survey of the major physics theories of the 20th century (relativity and quantum mechanics) and their impact on most areas of physics. Topics include the special theory of relativity, blackbody radiation, Planck's constant, photoelectric effect, Bohr's atom, wave function, Schrodinger's equation, uncertainty principle, atomic spectra and structure, introduction to nuclear physics and particles. (4 hrs. lecture/recitation) Note: Fulfills SUNY-GE Natural Science. Prerequisite: PHY230. Corequisite: PHY248. Offered on: A / 3 cr. hrs.