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Vladimir Aleksandrovich Fock (or Fok; ) (December 22, 1898 – December 27, 1974) was a
Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
physicist, who did foundational work on
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 ...
and
quantum electrodynamics In particle physics, quantum electrodynamics (QED) is the Theory of relativity, relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quant ...
.


Biography

He was born in St. Petersburg, Russia. 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 a research institute in optics in Russia. It works both in pure and applied optics. It was established in 1918 along the lines of a proposal by ...
, in 1924–1936 with the Leningrad Institute of Physics and Technology, in 1934–1941 and 1944–1953 with the Lebedev Physical Institute.


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, and 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 named after Oskar Klein and Walter Gordon. It is second-order i ...
. 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 method is named after Douglas ...
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 as Einstein's theory of gravity, is the differential geometry, geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of grav ...
theory, specifically for the many-body problems. Fock criticised on scientific grounds both Einstein's
general principle of relativity In physics, the principle of relativity is the requirement that the equations describing the laws of physics have the same form in all admissible frames of reference. For example, in the framework of special relativity, the Maxwell equations h ...
, as being devoid of physical substance, and the
equivalence principle The equivalence principle is the hypothesis that the observed equivalence of gravitational and inertial mass is a consequence of nature. The weak form, known for centuries, relates to masses of any composition in free fall taking the same t ...
, 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. Accor ...
) 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. It united the country's leading scientists and was subordinated directly to the Council of Ministers of the Soviet Union (u ...
(1939) and a member of the International Academy of Quantum Molecular Science.


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 Academic staff of Saint Petersburg State University 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 Russian scientists