Vladimir Fock
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Vladimir Aleksandrovich Fock (or Fok; russian: Влади́мир Алекса́ндрович Фок) (December 22, 1898 – December 27, 1974) was a
Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
physicist, who did foundational work on
quantum mechanics Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, ...
and
quantum electrodynamics In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and spec ...
.


Biography

He was born in
St. Petersburg, Russia Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...
. In 1922 he graduated from Petrograd University, then continued postgraduate studies there. He became a professor there in 1932. In 1919–1923 and 1928–1941 he collaborated with the
Vavilov State Optical Institute The Vavilov State Optical Institute in St Petersburg, Russia (named after Sergey Ivanovich Vavilov) is the largest research institute in optics in Russia. It works both in pure and applied optics, and has a high reputation in the field of hologra ...
, in 1924–1936 with the Leningrad Institute of Physics and Technology, in 1934–1941 and 1944–1953 with the
Lebedev Physical Institute The Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS or just LPI) (in russian: Физи́ческий институ́т имени П.Н.Ле́бедева Российской академии наук (ФИАН)), situated ...
.


Scientific work

His primary scientific contribution lies in the development of quantum physics and the theory of gravitation, although he also contributed significantly to the fields of mechanics, theoretical optics, physics of continuous media. In 1926, he derived the
Klein–Gordon equation The Klein–Gordon equation (Klein–Fock–Gordon equation or sometimes Klein–Gordon–Fock equation) is a relativistic wave equation, related to the Schrödinger equation. It is second-order in space and time and manifestly Lorentz-covariant ...
. He gave his name to Fock space, the Fock representation and
Fock state In quantum mechanics, a Fock state or number state is a quantum state that is an element of a Fock space with a well-defined number of particles (or quanta). These states are named after the Soviet physicist Vladimir Fock. Fock states play an im ...
, and developed the
Hartree–Fock method In computational physics and chemistry, the Hartree–Fock (HF) method is a method of approximation for the determination of the wave function and the energy of a quantum many-body system in a stationary state. The Hartree–Fock method often ...
in 1930. He made many subsequent scientific contributions during the rest of his life. Fock developed the electromagnetic methods for geophysical exploration in a book ''The theory of the study of the rocks resistance by the carottage method'' (1933), methods called
well logging Well logging, also known as borehole logging is the practice of making a detailed record (a ''well log'') of the geologic formations penetrated by a borehole. The log may be based either on visual inspection of samples brought to the surface ( ...
in modern literature. Fock made significant contributions to
general relativity General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics ...
theory, specifically for the many-body problems. Fock criticised on scientific grounds both Einstein's general principle of relativity, as being devoid of physical substance, and the
equivalence principle In the theory of general relativity, the equivalence principle is the equivalence of gravitational and inertial mass, and Albert Einstein's observation that the gravitational "force" as experienced locally while standing on a massive body (su ...
, as interpreted as the equivalence of gravitation and acceleration, as having only a local validity. In Leningrad, Fock created a scientific school in theoretical physics and raised the physics education in the USSR through his books. He wrote the first textbook on quantum mechanics ''Fundamentals of Quantum Mechanics'' (1931, 1978) and a very influential monograph ''The Theory of Space, Time and Gravitation'' (1955). Historians of science, such as Loren Graham, see Fock as a representative and proponent of Einstein's theory of relativity within the Soviet world. At a time when most Marxist philosophers objected to relativity theory, Fock emphasized a materialistic understanding of relativity that coincided philosophically with Marxism. He was a full member (
academician An academician is a full member of an artistic, literary, engineering, or scientific academy. In many countries, it is an honorific title used to denote a full member of an academy that has a strong influence on national scientific life. In syst ...
) of the
USSR Academy of Sciences The Academy of Sciences of the Soviet Union was the highest scientific institution of the Soviet Union from 1925 to 1991, uniting the country's leading scientists, subordinated directly to the Council of Ministers of the Soviet Union (until 1946 ...
(1939) and a member of the
International Academy of Quantum Molecular Science The International Academy of Quantum Molecular Science (IAQMS) is an international scientific learned society covering all applications of quantum theory to chemistry and chemical physics. It was created in Menton in 1967. The founding members we ...
.


See also

* List of things named after Vladimir Fock


References

* Graham, L. (1982). "The reception of Einstein's ideas: Two examples from contrasting political cultures". In Holton, G. and Elkana, Y. (Eds.) ''Albert Einstein: Historical and cultural perspectives''. Princeton, NJ: Princeton UP, pp. 107–136 * Fock, V. A. (1964). "The Theory of Space, Time and Gravitation". Macmillan.


External links


Oral history interview transcript with Vladimir Fok on 11 October 1967, American Institute of Physics, Niels Bohr Library & Archives
{{DEFAULTSORT:Fock, Vladimir 1898 births 1974 deaths Saint Petersburg State University alumni Saint Petersburg State University faculty Scientists from Saint Petersburg Full Members of the USSR Academy of Sciences Members of the International Academy of Quantum Molecular Science Soviet physicists Members of the German Academy of Sciences at Berlin