ROBERT L.SPROULL is president emeritus and professor of physics at the University of Rochester. Dr. Sproull received his Ph.D. degree in experimental physics from Cornell University in 1943. He joined the Cornell faculty in 1946 and was named director of the Materials Science Center in 1960. From 1963 to 1965 he directed the Advanced Research Projects Agency. Dr. Sproull moved to the University of Rochester in 1968 and served as president from 1970 to 1975. His research and teaching interests include thermionic electron emission, microwave radar, and experimental solid-state physics.

ALBERT R.C.WESTWOOD is director of the Martin Marietta Laboratories. In 1956, after receiving the Ph.D. degree in physical metallurgy from the University of Birmingham, England, Dr. Westwood joined the research department of Imperial Chemical Industries, Metals Division, in Birmingham. He joined the scientific staff of the Research Institute for Advanced Studies, Martin Marietta Corporation, in 1958 and became associate director and head of the Materials Science Department in 1964. He was named to his current position in 1974. Dr. Westwood is a member of the National Academy of Engineering.

GEORGE M.WHITESIDES is professor of chemistry at Harvard University. Prior to his current position he was Hudson and Dewey Professor at the Massachusetts Institute of Technology. His research interests include reaction mechanisms, organometallic chemistry, applied biochemistry, surface chemistry catalysis, and materials science. He is a member of the National Academy of Sciences. Dr. Whitesides received his Ph.D. degree from the California Institute of Technology in 1964.