CATALOG 1952-1953 PS. 424.-Chemical Physics. 3 hours. 3 credits. Prerequisite: PS. 320 and two years of chemistry. Not offered 1952-53. Molecular dipole moments as determined from dielectric measurements; molecular and nuclear structures as determined from band spectra, Raman spectra, X-ray and electron diffraction, and microwaves. PS. 430. (Formerly PS. 303).-Special Topics. 1 credit. Prerequisite: one year in Physics. Offered 1 and 2. GRADUATE COURSES Except where otherwise stated, an undergraduate major in physics is a prerequi- site for the following courses. A reading knowledge of German is usually required of the candidate for the M. S. degree. In general, a student will be expected to complete the work for the M. S. degree be- fore continuing work for the Ph.D. In addition to German, a reading knowledge of French or Russian will be required of the candidate for the Ph.D. Certain undergraduate courses, PS. 404, 405, and 406, may be taken for credit in a graduate major in physics. PS. 501.-Theoretical Physics. 5 hours. 5 credits. Offered 1. A theoretical treatment of the fundamental phenomena of physics, to prepare the graduate student for advanced detailed courses in the various' fields of physics, and to correlate these fields. The treatment will follow that in the text by Georg Joos, "Theo- retical Physics." PS. 502.-Theoretical Physics. 5 hours. 5 credits. The second half of the course PS. 501-502. Offered 2. PS. 503.-Kinetic Theory of Gases. 3 hours. 3 credits. Prerequisite: PS. 320. Not offered 1952-53. The elements of the kinetic theory, the application of the theory to gases and liquids, the electrical and magnetic properties of the molecules from the standpoint of the theory. PS. 504.-Conduction of Electricity Through Gases. 3 hours. 3 credits. Prerequisite: PS. 412. Theory, problems, and applications of gaseous electrical conduction designed for physics and engineering students. Subject matter includes the topics: kinetic theory of gases, atomic structure, ionization processes, emission phenomena, space charge, gaseous breakdowns, spark, glow and arc discharges at low and high pressures. PS. 507.-Advanced Electronics. 3 hours. 3 credits. Prerequisite: PS. 412. Offered 1. Properties of circuits with lumped constants and of circuits with distributed con- stants. Fundamental properties of electron tubes, narrow and wide band amplifiers; oscillators including the magnetron; microwaves, radiating systems, and transducers; circuit analysis; electron and ion accelerators. PS. 510.-Theory of Electromagnetic Waves. 3 hours. 3 credits. Prere- quisite: PS. 501-502. Not offered 1952-53. Electromagnetic waves, involving emission, transmission, the classical theory of dis- persion, optical activity and polarization, reflection, refraction, interference and dif- fraction. The statement "Offered 1" means offered first semester; 2, second semester; 3, summer session.