DEMBER, HARRY L. (1882–1943), German physicist. Born in Leimbach, Dember was at the Dresden Technische Hochschule (1905), where he was appointed professor of physics in 1914 and also director of the Physics Institute in 1923. Driven out by the Nazis, he held similar positions at the University of Istanbul from 1933 to 1941. He later immigrated to the United States and was visiting professor at Rutgers University, New Jersey, at the time of his death. His field was the photoelectricity of crystals and one aspect of his research in this area is known as the "Dember Effect."