Dr. Gentle attended the Massachusetts Institute of Technology, receiving an S.B. (1962) and Ph.D. (1966) in physics. He was appointed Assistant Professor of Physics at The University of Texas at Austin in 1966, Associate Professor in 1970, and Professor in 1976. He received an Alfred Sloan Fellowship for 1973-75. He was appointed Josey Professor of Energy, 1986-88. Since 1966, he has been engaged in a variety of experiments on nonlinear plasma waves, weak plasma turbulence, strong plasma turbulence, and tokamak confinement physics. In 1973, he assumed leadership of the first tokamak experiment at The University of Texas. In 1976, he initiated the TEXT Tokamak project, serving as director until 1985. He continued to work on TEXT, engaging in a number of experiments on transport and heating, until the completion of the project in 1996. His current transport research involves experiments using the tokamak facilties at MIT and General Atomics, San Diego. He has served on a number of advisory committees and review panels for the National Academy of Sciences, National Science Foundation, and Department of Energy. He has been chairtman of the physics department since January, 1997, and Director of the Fusion Research Center since August, 1998. He is a Fellow of the American Physical Society and a member of the European Physical Society and the American Association for the Advancement of Science.