Hideki Yukawa
Encyclopedia
né , was a Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese theoretical physicist and the first Japanese Nobel laureate
Nobel Prize
The Nobel Prizes are annual international awards bestowed by Scandinavian committees in recognition of cultural and scientific advances. The will of the Swedish chemist Alfred Nobel, the inventor of dynamite, established the prizes in 1895...

.

Biography

Yukawa was born in Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 and grew up in Kyoto
Kyoto
is a city in the central part of the island of Honshū, Japan. It has a population close to 1.5 million. Formerly the imperial capital of Japan, it is now the capital of Kyoto Prefecture, as well as a major part of the Osaka-Kobe-Kyoto metropolitan area.-History:...

. In 1929, after receiving his degree from Kyoto Imperial University, he stayed on as a lecturer for four years. After graduation, he was interested in theoretical physics
Theoretical physics
Theoretical physics is a branch of physics which employs mathematical models and abstractions of physics to rationalize, explain and predict natural phenomena...

, particularly in the theory of elementary particle
Elementary particle
In particle physics, an elementary particle or fundamental particle is a particle not known to have substructure; that is, it is not known to be made up of smaller particles. If an elementary particle truly has no substructure, then it is one of the basic building blocks of the universe from which...

s. In 1932, he married ; they had two sons, Harumi and Takaaki. In 1933 he became an assistant professor at Osaka University
Osaka University
, or , is a major national university located in Osaka, Japan. It is the sixth oldest university in Japan as the Osaka Prefectural Medical College, and formerly one of the Imperial Universities of Japan...

, at age 26.

In 1935 he published his theory of meson
Meson
In particle physics, mesons are subatomic particles composed of one quark and one antiquark, bound together by the strong interaction. Because mesons are composed of sub-particles, they have a physical size, with a radius roughly one femtometer: 10−15 m, which is about the size of a proton...

s, which explained the interaction between proton
Proton
The proton is a subatomic particle with the symbol or and a positive electric charge of 1 elementary charge. One or more protons are present in the nucleus of each atom, along with neutrons. The number of protons in each atom is its atomic number....

s and neutron
Neutron
The neutron is a subatomic hadron particle which has the symbol or , no net electric charge and a mass slightly larger than that of a proton. With the exception of hydrogen, nuclei of atoms consist of protons and neutrons, which are therefore collectively referred to as nucleons. The number of...

s, and was a major influence on research into elementary particles. In 1940 he became a professor in Kyoto University
Kyoto University
, or is a national university located in Kyoto, Japan. It is the second oldest Japanese university, and formerly one of Japan's Imperial Universities.- History :...

. In 1940 he won the Imperial Prize of the Japan Academy
Imperial Prize of the Japan Academy
The was a prestigious honor conferred by the Imperial Academy from 1911 through 1945. The award was presented to non-members in recognition of their academic theses, books, and achievements....

, in 1943 the Decoration of Cultural Merit
Person of Cultural Merit
is an official Japanese recognition-honor which is awarded annually to select people who have made outstanding cultural contributions. This distinction is intended to play a role as a part of a system of support measures for the promotion of creative activities in Japan...

 from the Japanese government. In 1949 he became a professor at Columbia University
Columbia University
Columbia University in the City of New York is a private, Ivy League university in Manhattan, New York City. Columbia is the oldest institution of higher learning in the state of New York, the fifth oldest in the United States, and one of the country's nine Colonial Colleges founded before the...

, the same year he received the Nobel Prize in Physics
Nobel Prize in Physics
The Nobel Prize in Physics is awarded once a year by the Royal Swedish Academy of Sciences. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others are the Nobel Prize in Chemistry, Nobel Prize in Literature, Nobel Peace Prize, and...

, after the discovery by Cecil Frank Powell
Cecil Frank Powell
Cecil Frank Powell, FRS was a British physicist, and Nobel Prize in Physics laureate for his development of the photographic method of studying nuclear processes and for the resulting discovery of the pion , a heavy subatomic particle.Powell was born in Tonbridge, Kent, England, the son of a local...

, Giuseppe Occhialini
Giuseppe Occhialini
Giuseppe Paolo Stanislao "Beppo" Occhialini ForMemRS was an Italian physicist, who contributed to the discovery of the pion or pi-meson decay in 1947, with César Lattes and Cecil Frank Powell . At the time of this discovery, they were all working at the H. H...

 and César Lattes
César Lattes
Cesare Mansueto Giulio Lattes , also known as Cesar Lattes, was a Brazilian experimental physicist, one of the discoverers of the pion, a composite subatomic particle made of a quark and an antiquark.-Life:Lattes was born to a family of Italian Jewish immigrants in Curitiba, Southern Brazil...

 of Yukawa's predicted pion
Pion
In particle physics, a pion is any of three subatomic particles: , , and . Pions are the lightest mesons and they play an important role in explaining the low-energy properties of the strong nuclear force....

 in 1947. Yukawa also worked on the theory of K-capture, in which a low energy electron is absorbed by the nucleus, after its initial prediction by G. C. Wick.

Yukawa became the first chairman of Yukawa Institute for Theoretical Physics
Yukawa Institute for Theoretical Physics
The is a research institute in the field of theoretical physics, attached to Kyoto University in Japan. It was inaugurated in 1952.While the center is often referred to as "YITP", this can be confusing as YITP also stands for the C. N...

 in 1953. He received a Doctorate, honoris causa, from the University of Paris
University of Paris
The University of Paris was a university located in Paris, France and one of the earliest to be established in Europe. It was founded in the mid 12th century, and officially recognized as a university probably between 1160 and 1250...

 and honorary memberships in the Royal Society of Edinburgh
Royal Society of Edinburgh
The Royal Society of Edinburgh is Scotland's national academy of science and letters. It is a registered charity, operating on a wholly independent and non-party-political basis and providing public benefit throughout Scotland...

, the Indian Academy of Sciences
Indian Academy of Sciences
The Indian Academy of Sciences, Bangalore was founded by Sir C. V. Raman, and was registered as a Society on 24 April 1934. Inaugurated on 31 July 1934, it began with 65 founding fellows. The first general meeting of Fellows, held on the same day, elected Professor Raman as President, and adopted...

, the International Academy of Philosophy and Sciences, and the Pontificia Academia Scientiarum
Pontifical Academy of Sciences
The Pontifical Academy of Sciences is a scientific academy of the Vatican, founded in 1936 by Pope Pius XI. It is placed under the protection of the reigning Supreme Pontiff. Its aim is to promote the progress of the mathematical, physical and natural sciences and the study of related...

.

He was an editor of Progress of Theoretical Physics, and published the books Introduction to Quantum Mechanics (1946) and Introduction to the Theory of Elementary Particles (1948).

In 1955, he joined ten other leading scientists and intellectuals in signing the Russell-Einstein Manifesto
Russell-Einstein Manifesto
The Russell–Einstein Manifesto was issued in London on July 9, 1955 by Bertrand Russell in the midst of the Cold War. It highlighted the dangers posed by nuclear weapons and called for world leaders to seek peaceful resolutions to international conflict...

, calling for nuclear disarmament
Nuclear disarmament
Nuclear disarmament refers to both the act of reducing or eliminating nuclear weapons and to the end state of a nuclear-free world, in which nuclear weapons are completely eliminated....

.

Solo violinist Diana Yukawa
Diana Yukawa
is an Anglo-Japanese solo violinist. She has had two solo albums with BMG Japan, one of which opened to #1.-Early life:Diana Yukawa was born in Tokyo, Japan to English ballet dancer Susanne Bayly and Japanese banker Akihisa Yukawa one month after her father died in the 1985 Japan Airlines Flight...

 (ダイアナ湯川) is a relative of Hideki Yukawa.

See also

  • Yukawa potential, an approximation for the binding force in an atomic nucleus
  • Yukawa interaction
    Yukawa interaction
    In particle physics, Yukawa's interaction, named after Hideki Yukawa, is an interaction between a scalar field \phi and a Dirac field \Psi of the typeV \approx g\bar\Psi \phi \Psi or g \bar \Psi \gamma^5 \phi \Psi ....

  • Progress of Theoretical Physics (Journal)

External links

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