Karl_Lark-Horovitz--Hans_Albrecht_Bethe

Karl Lark-Horovitz (July 20, 1892 – April 14, 1958) was an American physicist known for his pioneering work in solid-state physics that played a role in the invention of the transistor. He brought the previously neglected physics department at Purdue University to prominence during his tenure there as department head from 1929 until his death in 1958.