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Valery Pokrovsky
Valery Leonidovich Pokrovsky (russian: Валерий Леонидович Покровский; born 1 January 1931) is a Soviet and Russian physicist. He is a member of the Landau Institute in Chernogolovka near Moscow in Russia and a Distinguished Professor of Theoretical Physics and holder of the William R. Thurman ’58 Chair in Physics at Texas A&M University. He has twice received the Landau Prize of the Soviet Academy of Science, in 1984 and in 2018. Early life and education Valery Leonidovich Pokrovsky was born on 1 January 1931 to Leonid Pokrovsky and Raisa Razumovsky in the former Soviet Union, growing up during the Stalinist era and World War II. In 1948, he became a student of the Department of Physics and Mathematics of Kharkov University. Despite a politically-motivated attempt to expel him, Pokrovsky completed his master's degree, graduating from Kharkov University, Ukrainian SSR, USSR in May 1953. Pokrovsky and his wife, Svetlana Krylova, were then sent to No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landau Institute For Theoretical Physics
The L. D. Landau Institute for Theoretical Physics (russian: link=no, Институт теоретической физики имени Л. Д. Ландау (ИТФ)) of the Russian Academy of Sciences is a research institution, located in the small town of Chernogolovka near Moscow (there is also a subdivision in Moscow, on the territory of the P. L. Kapitza Institute for Physical Problems). History The Landau Institute was formed in 1964 to keep the ''Landau school'' alive after the tragic car accident of Lev D. Landau. Since its foundation, the institute grew rapidly to about one hundred scientists, becoming one of the worldwide best-known and leading institutes for theoretical physics. Unlike many other scientific centers in Russia, the Landau Institute had the strength to cope with the crisis of the nineties in the last century. Although about one half of the scientists accepted positions at leading scientific centers and universities abroad, most of them kept ties with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yuri Borisovich Rumer
Yuri Borisovich Rumer (russian: Юрий Борисович Румер, 28 April 1901 – 1 February 1985) was a Soviet theoretical physicist, who mostly worked in the fields of quantum mechanics and quantum optics. Known in the West as Georg Rumer, he was a close friend of Lev Landau, and was arrested with him during the Great Purge in 1938. Biography Rumer was born in Moscow into a Jewish merchant family. His elder brothers Osip and Isidor were well-known translators and philosophers. After graduating from non-classical secondary school in 1917, in 1918 Rumer entered the Physics and Mathematics Faculty of Moscow State University and graduated in 1924. In 1927 he married Lyudmila Zalkind, his girlfriend of nine years, and emigrated with her to Oldenburg, Germany, where he enrolled to study construction engineering. The same year he abandoned this boring for him topic in favor of theoretical physics, and moved to Göttingen. During an internship at the University of Götting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-dimensional
In mathematics, a plane is a Euclidean (flat), two-dimensional surface that extends indefinitely. A plane is the two-dimensional analogue of a point (zero dimensions), a line (one dimension) and three-dimensional space. Planes can arise as subspaces of some higher-dimensional space, as with one of a room's walls, infinitely extended, or they may enjoy an independent existence in their own right, as in the setting of two-dimensional Euclidean geometry. Sometimes the word ''plane'' is used more generally to describe a two-dimensional surface, for example the hyperbolic plane and elliptic plane. When working exclusively in two-dimensional Euclidean space, the definite article is used, so ''the'' plane refers to the whole space. Many fundamental tasks in mathematics, geometry, trigonometry, graph theory, and graphing are performed in a two-dimensional space, often in the plane. Euclidean geometry Euclid set forth the first great landmark of mathematical thought, an axiomatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commensurability (mathematics)
In mathematics, two non-zero real numbers ''a'' and ''b'' are said to be ''commensurable'' if their ratio ' is a rational number; otherwise ''a'' and ''b'' are called ''incommensurable''. (Recall that a rational number is one that is equivalent to the ratio of two integers.) There is a more general notion of commensurability in group theory. For example, the numbers 3 and 2 are commensurable because their ratio, , is a rational number. The numbers \sqrt and 2\sqrt are also commensurable because their ratio, \frac=\frac, is a rational number. However, the numbers \sqrt and 2 are incommensurable because their ratio, \frac, is an irrational number. More generally, it is immediate from the definition that if ''a'' and ''b'' are any two non-zero rational numbers, then ''a'' and ''b'' are commensurable; it is also immediate that if ''a'' is any irrational number and ''b'' is any non-zero rational number, then ''a'' and ''b'' are incommensurable. On the other hand, if both ''a'' and ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Patashinski
Alexander Zakharovich Patashinski (russian: Александр Захарович Паташинский, born in 1936) was a Soviet and Russian physicist. He is a professor for Materials Research Scientist and professor at Northwestern University in Evanston, Illinois. He died February 22, 2020 of heart failure near his home in Seattle. Early life He received his master degree in Physical Engineering from the Moscow Institute of Physics and Technology (MFTI) in 1960 on the subject of low temperature physics. He then pursued graduate studies in high energy physics at the Kapitza Institute in Moscow and at the Institute of Thermophysics in Novosibirsk Academgorodok. In 1963, he defended his PhD thesis on Quantum Field Theory at the Novosibirsk Scientific Center (scientific advisor Lev Landau). Career He was a scientist at the Siberian Branch of the Academy of Sciences of the USSR, at the Institute of Thermal Physics (1960-1968) and the Budker Institute of Nuclear Physics (196 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phase Transition
In chemistry, thermodynamics, and other related fields, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic states of matter: solid, liquid, and gas, and in rare cases, plasma. A phase of a thermodynamic system and the states of matter have uniform physical properties. During a phase transition of a given medium, certain properties of the medium change as a result of the change of external conditions, such as temperature or pressure. This can be a discontinuous change; for example, a liquid may become gas upon heating to its boiling point, resulting in an abrupt change in volume. The identification of the external conditions at which a transformation occurs defines the phase transition point. Types of phase transition At the phase transition point for a substance, for instance the boiling point, the two phases involved - liquid and vapor, have identic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Condensed Matter
Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of matter, especially the solid and liquid phases which arise from electromagnetic forces between atoms. More generally, the subject deals with "condensed" phases of matter: systems of many constituents with strong interactions between them. More exotic condensed phases include the superconducting phase exhibited by certain materials at low temperature, the ferromagnetic and antiferromagnetic phases of spins on crystal lattices of atoms, and the Bose–Einstein condensate found in ultracold atomic systems. Condensed matter physicists seek to understand the behavior of these phases by experiments to measure various material properties, and by applying the physical laws of quantum mechanics, electromagnetism, statistical mechanics, and other theories to develop mathematical models. The diversity of systems and phenomena available for study makes condensed matter p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Statistical Physics
Statistical physics is a branch of physics that evolved from a foundation of statistical mechanics, which uses methods of probability theory and statistics, and particularly the Mathematics, mathematical tools for dealing with large populations and approximations, in solving physical problems. It can describe a wide variety of fields with an inherently stochastic nature. Its applications include many problems in the fields of physics, biology, chemistry, and neuroscience. Its main purpose is to clarify the properties of matter in aggregate, in terms of physical laws governing atomic motion. Statistical mechanics develop the Phenomenology (particle physics), phenomenological results of thermodynamics from a probabilistic examination of the underlying microscopic systems. Historically, one of the first topics in physics where statistical methods were applied was the field of classical mechanics, which is concerned with the motion of particles or objects when subjected to a force. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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, quantum field theory, quantum technology, and quantum information science. Classical physics, the collection of theories that existed before the advent of quantum mechanics, describes many aspects of nature at an ordinary (macroscopic) scale, but is not sufficient for describing them at small (atomic and subatomic) scales. Most theories in classical physics can be derived from quantum mechanics as an approximation valid at large (macroscopic) scale. Quantum mechanics differs from classical physics in that energy, momentum, angular momentum, and other quantities of a bound system are restricted to discrete values ( quantization); objects have characteristics of both particles and waves (wave–particle duality); and there are limits to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated between the Baltic and North seas to the north, and the Alps to the south; it covers an area of , with a population of almost 84 million within its 16 constituent states. Germany borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The nation's capital and most populous city is Berlin and its financial centre is Frankfurt; the largest urban area is the Ruhr. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire. During the 16th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jülich
Jülich (; in old spellings also known as ''Guelich'' or ''Gülich'', nl, Gulik, french: Juliers, Ripuarian: ''Jöllesch'') is a town in the district of Düren, in the federal state of North Rhine-Westphalia, Germany. As a border region between the competing powers in the Lower Rhine and Meuse areas, the town and the Duchy of Jülich played a historic role from the Middle Ages up to the 17th century. Geography Jülich stands in the Rur valley on the banks of the river Rur. The town is bordered by the town of Linnich in the north, the municipality of Titz in the northeast, the municipality of Niederzier in the southeast, the municipality of Inden in the south, and by the municipality of Aldenhoven in the west. Its maximum size is 13.3 km from east to west and 10.9 km from north to south. The highest point in Jülich is in Bourheim, 110 m above sea level (excepting Sophienhöhe, an extensive artificial mountain made up of overburden from a nearby open-pit lignite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heiner Müller-Krumbhaar
__NOTOC__ Heiner is a German male name, a diminutive of Heinrich, and also a surname. Given name *Heiner Backhaus (born 1982), professional footballer *Heiner Baltes (born 1949), former football defender * Heiner Brand (born 1952), former West German handball player *Heiner Dopp (born 1956), former field hockey player from West Germany *Heiner Dreismann, PhD, the former president and CEO of Roche Molecular Systems *Heiner Geißler (born 1930), German politician with the Christian Democratic Union (CDU) party *Heiner Goebbels (born 1952), German composer and music director *Heiner Lauterbach (born 1953), German actor *Heiner Möller (born 1952), West German former handball player *Heiner Mühlmann (born 1938), German philosopher *Heiner Müller (1929–1995), German dramatist, poet, writer, essayist and theatre director *Heiner Zieschang (1936–2004), German mathematician * Klaus-Heiner Lehne (born 1957), German politician and Member of the European Parliament for North Rhine-West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
