Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Carl Wilhelm Ramsauer (February 6, 1879 in Osternburg, Oldenburg, Germany â€“ December 24, 1955 in Berlin, Germany) was an internationally notable professor of physics and research physicist, famous for the discovery of the Ramsauer-Townsend effect. He pioneered the field of electron and proton collisions with gas molecules. From 1897 to 1907, Ramsauer studied at the Munich, TÃ¼bingen, Berlin, Kiel, London, and Breslau Universities. He was awarded his doctorate at Kiel. From 1907 to 1909, Ramsauer was a teaching assistant to Philipp Lenard in the physics department at the Ruprecht Karl University of Heidelberg. It was here that he conducted research on the quantum effect of the transparency of noble gases to slow electrons, known as the Ramsauer-Townsend effect. Subsequently, he was a staff scientist at the Radiological Institute in Heidelberg. During World War I, he served as an artillery officer. From 1921, he was an ordinarius professor at the Danzig Technische Hochschule.