Obituaries

Faculty

Joseph Ballam, of Stanford, December 14, at 80, from complications due to emphysema. He was associate director for the research division at Stanford Linear Accelerator Center for 19 years and professor emeritus. He oversaw more than 300 physicists, engineers and technicians. During his tenure, three Nobel prizes were awarded to SLAC scientists for uncovering the internal structure of nucleons and for the discovery of the charm particle and the tau lepton. He received a Guggenheim Fellowship and was a visiting scholar at Imperial College in London, the