9502555 Mullen This CAREER grant contains two parts: research and teaching. The research component concerns three theoretical projects investigating helium 4: the properties of films at submonolayer coverages; the hydrodynamics and phase transitions in a novel, low temperature state; and the description of devices using lithographic technology to pattern helium films. Also planned is theoretical support for ongoing experiments on two dimensional electron gasses at the institution of the Principal Investigator. The teaching component is the revision of the Introductory Physics course for majors, including the integration of computers into the curriculum. %%% This CAREER grant contains two parts: research and teaching. The research component concerns three theoretical projects investigating helium 4: the properties of films at coverages less than an atom thick; the hydrodynamics and phase transitions in a novel, low temperature state; and the description of devices using lithographic technology to pattern helium films. Also planned is theoretical support for ongoing experiments on two dimensional electron gasses at the institution of the Principal Investigator. The teaching component is the revision of the Introductory Physics course for majors, including the integration of computers into the curriculum. ***