Title " Some Physics and Chemistry of Plasmas in Liquids and Their Surgical Applications" Abstract Electrical discharges in conducting liquids can produce luminous ionized vapors (plasmas) that have remarkable physical and chemical properties. They are finding applications in surgery, and many medical devices and procedures exploiting these discharges have been developed during the last 15 years.  This talk will focus on the basic physics and chemistry related to the device operation.  The molecular physics of vapor phase water and its fragments, as well as various models (finite element coupled physics, chemical kinetics, and molecular spectroscopy) are used to interpret the experimental observations.  A brief movie clip will illustrate the application.