was a Japanese physicist.

Life

Tokio Takeuchi was born on 26 October 1894 in

Kanazawa is the capital of Ishikawa Prefecture in central Japan. , the city had an estimated population of 466,029 in 203,271 households, and a population density of 990 persons per km2. The total area of the city was . Etymology The name "Kanazaw ...

city. After graduating from the physics department of the

Tokyo Imperial University The University of Tokyo (, abbreviated as in Japanese and UTokyo in English) is a public university, public research university in Bunkyō, Tokyo, Japan. Founded in 1877 as the nation's first modern university by the merger of several Edo peri ...

in 1918, he started teaching at the Tokyo Higher Technical School (the origin of

Tokyo Institute of Technology The Tokyo Institute of Technology () was a public university in Meguro, Tokyo, Japan. It merged with Tokyo Medical and Dental University to form the Institute of Science Tokyo on 1 October 2024. The Tokyo Institute of Technology was a De ...

) in 1919, holding a short career as an engineer at

Mitsubishi Shipbuilding The is a group of autonomous Japanese multinational companies in a variety of industries. Founded by Yatarō Iwasaki in 1870, the Mitsubishi Group traces its origins to the Mitsubishi zaibatsu, a unified company that existed from 1870 to 194 ...

(the origin of

Mitsubishi Heavy Industries is a Japanese Multinational corporation, multinational engineering, electrical equipment and electronics corporation headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group and its automobile division is the prede ...

), and later in 1932 became assistant professor at the

. From 1928 to 1930 he visited Europe for research; in France he studied

quantum mechanics Quantum mechanics is the fundamental physical Scientific theory, theory that describes the behavior of matter and of light; its unusual characteristics typically occur at and below the scale of atoms. Reprinted, Addison-Wesley, 1989, It is ...

under the supervision of

Louis de Broglie Louis Victor Pierre Raymond, 7th Duc de Broglie (15 August 1892 – 19 March 1987) was a French theoretical physicist and aristocrat known for his contributions to quantum theory. In his 1924 PhD thesis, he postulated the wave nature of elec ...

. On 24 April 1944, he died in Tokyo due to vertebral

osteolysis Osteolysis is an active resorption of bone matrix by osteoclasts and can be interpreted as the reverse of ossification. Although osteoclasts are active during the natural formation of healthy bone the term "osteolysis" specifically refers to a pat ...

Work

Physical cosmology

Takeuchi studied general relativistic cosmology in the 1930s, which include the interpretation of the Hubble-Lemaître law as a consequence of the varying-speed-of-light hypothesis, and construction of an eternally oscillating cosmological model that has no initial singularity. These papers had attracted little attention for more than 70 years until being discovered by a Danish historian of science Helge Kragh.

References

{{DEFAULTSORT:Takeuchi, Tokio 1894 births 1944 deaths 20th-century Japanese physicists Academic staff of Tokyo Institute of Technology University of Tokyo alumni People from Kanazawa, Ishikawa Deaths from arthritis Scientists from Kanazawa, Ishikawa