the University of Michigan by Harrison M. Randall, chairman of the physics department. Laporte served as an instructor for one year and then was promoted to assistant professor. It was the intention of Randall to build up the theoretical physics capabilities at Michigan, so in 1927 Laporte was joined by George Eugene Uhlenbeck, Samuel Abraham Goudsmit, and David M. Dennison, who remained at Michigan for many years. In 1928, Laporte was invited as a guest lecturer at the Imperial University of Kyoto. While in Japan, he got an urgent message from Sommerfeld, who was going to the United States and wanted Laporte to lecture in his place at LMU. Laporte had to cut his visit short and make a two-week, non-stop trip via the Trans-Siberian Railway in order to arrive in Munich in time. His next visits to Japan were as a lecturer at the University of Tokyo, on leave from Michigan, in 1933 and 1937; during these periods, he learned to speak Japanese and understand their culture. In between these visits, in 1935, he became a naturalized citizen of the United States. From 1954 to 1955, and again from 1961 to 1963, he was a scientific advisor to the American Ambassador in Tokyo. His activities resulted in a landmark atomic energy agreement between the United States and Japan, and he was cited by the U.S. State Department for his key contributions. Between his foreign services in Japan, he served the United States in Germany. From 1949 to 1950, Laporte was an intelligence analyst for the U.S. Army of Occupation in Heidelberg. It was in 1944 that Laporte added a new area to his professional activities – fluid dynamics, which includes the sub-field of hydrodynamics. That year, he published a paper giving an exact solution to the problem of the lift of an airfoil of elliptical outline. Two years later, he conducted experiments in fluid dynamics with an advanced design shock tube facility put together under Lincoln Smith at Michigan. When Smith left in 1946, Laporte took over the facility. The shock tube allowed him to make spectroscopic measurements in new regions through the shock heating of gases. The addition of fluid dynamics to his research activities was in reality a convergence of a number of his professional interests in quantum mechanics and spectroscopy. And his time at LMU influenced this, as Sommerfeld had done work in hydrodynamics and Heisenberg’s