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was a Japanese
theoretical physicist Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and predict natural phenomena. This is in contrast to experimental physics, which uses experime ...
, known for
fluid mechanics Fluid mechanics is the branch of physics concerned with the mechanics of fluids ( liquids, gases, and plasmas) and the forces on them. It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical and ...
and
mathematical physics Mathematical physics refers to the development of mathematical methods for application to problems in physics. The '' Journal of Mathematical Physics'' defines the field as "the application of mathematics to problems in physics and the developm ...
. Imai was born on 7 October 1914 in
Dairen Dalian () is a major sub-provincial port city in Liaoning province, People's Republic of China, and is Liaoning's second largest city (after the provincial capital Shenyang) and the third-most populous city of Northeast China. Located on the ...
. A few years later, his family returned to
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whi ...
, where he spent his childhood. He skipped one grade in elementary school and another in middle school, and he entered the First Higher School. He proceeded to the
Imperial University of Tokyo , abbreviated as or UTokyo, is a public research university located in Bunkyō, Tokyo, Japan. Established in 1877, the university was the first Imperial University and is currently a Top Type university of the Top Global University Project by ...
, majoring in physics, and graduated at the age of 21. Upon his graduation in 1936, he was appointed assistant to Susumu Tomotika in the newly established Imperial University of Osaka. Two years later, he returned to the Imperial University of Tokyo as a lecturer, and in 1942 was promoted to assistant professor. From 1950, he was professor of physics in the faculty of science until his official retirement from the University of Tokyo in 1975. He was concurrently a member of the Aeronautical Research Institute, the University of Tokyo (1938–1964). He was also visiting professor at a number of overseas universities, the
University of Maryland The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland. Founded in 1856, UMD is the flagship institution of the University System of ...
(1955–1957),
Aix-Marseille University Aix-Marseille University (AMU; french: Aix-Marseille Université; formally incorporated as ''Université d'Aix-Marseille'') is a public research university located in the Provence region of southern France. It was founded in 1409 when Louis II o ...
(1960), D.V.L. Aachen (1961–1962),
Cornell University Cornell University is a private statutory land-grant research university based in Ithaca, New York. It is a member of the Ivy League. Founded in 1865 by Ezra Cornell and Andrew Dickson White, Cornell was founded with the intention to tea ...
(1965–1966, 1977), and the Technical University of Aachen (1969). On his retirement from the University of Tokyo, he became professor emeritus and moved to Osaka University as professor of mechanical engineering in the faculty of engineering science (1975–1978), and then to Kogakuin University (1978–1987), where he got the title of professor emeritus. In 1994 he became an academician of the
Japan Academy The Japan Academy ( Japanese: 日本学士院, ''Nihon Gakushiin'') is an honorary organisation and science academy founded in 1879 to bring together leading Japanese scholars with distinguished records of scientific achievements. The Academy is ...
.


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Selected literature

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Bibliography

* {{DEFAULTSORT:Imai, Isao 1914 births 2004 deaths Japanese physicists Laureates of the Imperial Prize Mathematical physicists Academic staff of Osaka University Theoretical physicists University of Tokyo alumni Academic staff of the University of Tokyo Japanese expatriates in China Presidents of the Physical Society of Japan