Donald H. Kobe, 79, Professor Emeritus of physics, died Dec. 3 in Denton. He joined the physics faculty in 1968 and had been on modified service after retiring in 2008. He made significant contributions to quantum theory and to other areas of theoretical physics. He published papers concerned with quantum mechanics, quantum field theory, statistical mechanics, classical mechanics and electromagnetism. He had served as a research associate and visiting professor in Sweden and Denmark as well as at Ohio State University in Columbus and Northeastern University in Boston. He also lectured in China and Kenya and earned Fulbright fellowships to Taiwan and Brazil. He earned his bachelor’s degree from the University of Texas and master’s and doctoral degrees from the University of Minnesota.