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Alexei Fridman
Alexey Maksimovich Fridman (17 February 1940 – 29 October 2010) was a Soviet physicist specializing in astrophysics, physics of gravitating systems and plasma physics. He discovered new types of instabilities in gravitating media, created the theory of planetary rings and predicted the existence of small Uranus satellites that were later discovered. He also developed the hydrodynamic theory of spiral structure in galaxies. Fridman worked at the Institute of Astronomy of the Russian Academy of Sciences, INASAN, and was professor at the Moscow Institute of Physics and Technology and at Moscow State University. Biography Alexey "Alik" Fridman was born in Moscow on February 17, 1940, in a Jewish family, to Maksim Efimovich Fridman (surgeon, MD/Ph.D./Sci.D.; 1903–1990) and Felitsia Yakovlevna Sheinbaum (economist, 1907–1999). The Polyachenko family lived in the same building, and Alik Fridman and Valerij Polyachenko's lifelong friendship (and later scientific collaboration) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moscow
Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million residents within the city limits, over 17 million residents in the urban area, and over 21.5 million residents in the metropolitan area. The city covers an area of , while the urban area covers , and the metropolitan area covers over . Moscow is among the world's largest cities; being the most populous city entirely in Europe, the largest urban and metropolitan area in Europe, and the largest city by land area on the European continent. First documented in 1147, Moscow grew to become a prosperous and powerful city that served as the capital of the Grand Duchy that bears its name. When the Grand Duchy of Moscow evolved into the Tsardom of Russia, Moscow remained the political and economic center for most of the Tsardom's history. When th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moons Of Uranus
Uranus, the seventh planet of the Solar System, has 27 known moons, most of which are named after characters that appear in, or are mentioned in, the works of William Shakespeare and Alexander Pope. Uranus's moons are divided into three groups: thirteen inner moons, five major moons, and nine irregular moons. The inner and major moons all have prograde orbits, while orbits of the irregulars are mostly retrograde. The inner moons are small dark bodies that share common properties and origins with Uranus's rings. The five major moons are ellipsoidal, indicating that they reached hydrostatic equilibrium at some point in their past (and may still be in equilibrium), and four of them show signs of internally driven processes such as canyon formation and volcanism on their surfaces. The largest of these five, Titania, is 1,578 km in diameter and the eighth-largest moon in the Solar System, about one-twentieth the mass of the Earth's Moon. The orbits of the regular moons are near ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voyager 2
''Voyager 2'' is a space probe launched by NASA on August 20, 1977, to study the outer planets and interstellar space beyond the Sun's heliosphere. As a part of the Voyager program, it was launched 16 days before its twin, ''Voyager 1'', on a trajectory that took longer to reach gas giants Jupiter and Saturn but enabled further encounters with ice giants Uranus and Neptune. ''Voyager 2'' remains the only spacecraft to have visited either of the ice giant planets. ''Voyager 2'' was the fourth of five spacecraft to achieve Solar escape velocity, which allowed it to leave the Solar System. ''Voyager 2'' successfully fulfilled its primary mission of visiting the Jovian system in 1979, the Saturnian system in 1981, Uranian system in 1986, and the Neptunian system in 1989. The spacecraft is now in its extended mission of studying interstellar space. It has been operating for as of ; , it has reached a distance of from Earth. The probe entered interstellar space on November 5, 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irkutsk
Irkutsk ( ; rus, Иркутск, p=ɪrˈkutsk; Buryat language, Buryat and mn, Эрхүү, ''Erhüü'', ) is the largest city and administrative center of Irkutsk Oblast, Russia. With a population of 617,473 as of the 2010 Census, Irkutsk is the List of cities and towns in Russia by population, 25th-largest city in Russia by population, the fifth-largest in the Siberian Federal District, and one of the largest types of inhabited localities in Russia, cities in Siberia. Located in the south of the eponymous oblast, the city proper lies on the Angara River, a tributary of the Yenisei River, Yenisei, about 850 kilometres (530 mi) to the south-east of Krasnoyarsk and about 520 kilometres (320 mi) north of Ulaanbaatar. The Trans-Siberian Highway (Federal M53 and M55 Highways) and Trans-Siberian Railway connect Irkutsk to other regions in Russia and Mongolia. Many distinguished Russians were sent into exile in Irkutsk for their part in the Decembrist revolt of 1825, and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lev Landau
Lev Davidovich Landau (russian: Лев Дави́дович Ланда́у; 22 January 1908 – 1 April 1968) was a Soviet- Azerbaijani physicist of Jewish descent who made fundamental contributions to many areas of theoretical physics. His accomplishments include the independent co-discovery of the density matrix method in quantum mechanics (alongside John von Neumann), the quantum mechanical theory of diamagnetism, the theory of superfluidity, the theory of second-order phase transitions, the Ginzburg–Landau theory of superconductivity, the theory of Fermi liquids, the explanation of Landau damping in plasma physics, the Landau pole in quantum electrodynamics, the two-component theory of neutrinos, and Landau's equations for ''S'' matrix singularities. He received the 1962 Nobel Prize in Physics for his development of a mathematical theory of superfluidity that accounts for the properties of liquid helium II at a temperature below (). Life Early years Landau was born ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleksei Zinovyevich Petrov
Aleksei Zinovyevich Petrov (russian: Алексе́й Зино́вьевич Петро́в; 28 October (15 October, Old Style) 1910, Koshki, Samara Governorate, Russian Empire – 9 May 1972, Kiev, Soviet Union) was a mathematician noted for his work on the classification of Einstein spaces, today called Petrov classification. The Petrov classification is related with the Weyl tensor In differential geometry, the Weyl curvature tensor, named after Hermann Weyl, is a measure of the curvature of spacetime or, more generally, a pseudo-Riemannian manifold. Like the Riemann curvature tensor, the Weyl tensor expresses the tidal f ... and it was first published by A. Z. Petrov in 1954. External linksA biography of Petrov from Kazan State University {{DEFAULTSORT:Petrov, Aleksei Zinovyevich 1910 births 1972 deaths Soviet mathematicians ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jewish Quota
A Jewish quota was a discriminatory racial quota designed to limit or deny access for Jews to various institutions. Such quotas were widespread in the 19th and 20th centuries in developed countries and frequently present in higher education, often at prestigious universities. By countries Canada Some universities in Canada, notably McGill University, Université de Montréal and the University of Toronto Faculty of Medicine, had longstanding quotas on the number of Jews admitted to the respective universities. McGill University’s strict quota was the longest-running, having been officially adopted in 1920 and remaining in place until the late 1960s. Germany In Germany, a whole series of ''numerus clausus'' resolutions were adopted in 1929 on the basis of race and place of origin, not religion. On 25 April 1933, the Nazi government introduced a 1.5% quota for new admissions of German non-Aryans—ie., essentially of German Jews—as core issue of a law claiming to general ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sambo (martial Art)
, aka = Sombo (in English-speaking countries) , focus = Hybrid , country = Soviet Union , pioneers = Viktor Spiridonov, Vasili Oshchepkov, Anatoly Kharlampiev , famous_pract = List of Practitioners , olympic = No, but IOC recognized , website = , module=, ancestor arts=Catch Wrestling, Judo, Kickboxing, Japanese Jiu Jitsu, Boxing Sambo (russian: са́мбо, ) is a Russian martial art with Soviet origins, an internationally practiced combat sport, and a recognized style of amateur wrestling included by UWW in the World Wrestling Championships along with Greco-Roman wrestling and freestyle wrestling. Etymology It originated in the Russian SFSR in the Soviet Union. The word ''sambo'' is an acronym of (russian: самозащита без оружия), which literally translates to 'self-defence without weapons'. Origins Sambo is relatively modern since its development began in the early 1920s by the Soviet NKVD and R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Komsomol
The All-Union Leninist Young Communist League (russian: link=no, Всесоюзный ленинский коммунистический союз молодёжи (ВЛКСМ), ), usually known as Komsomol (; russian: Комсомол, links=no ()), a syllabic abbreviation of the Russian ), was a political youth organization in the Soviet Union. It is sometimes described as the youth division of the Communist Party of the Soviet Union (CPSU), although it was officially independent and referred to as "the helper and the reserve of the CPSU". The Komsomol in its earliest form was established in urban areas in 1918. During the early years, it was a Russian organization, known as the Russian Young Communist League, or RKSM. During 1922, with the unification of the USSR, it was reformed into an all-union agency, the youth division of the All-Union Communist Party. It was the final stage of three youth organizations with members up to age 28, graduated at 14 from the Young Pioneer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Stalin
Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as General Secretary of the Communist Party of the Soviet Union (1922–1952) and Chairman of the Council of Ministers of the Soviet Union (1941–1953). Initially governing the country as part of a collective leadership, he consolidated power to become a dictator by the 1930s. Ideologically adhering to the Leninist interpretation of Marxism, he formalised these ideas as Marxism–Leninism, while his own policies are called Stalinism. Born to a poor family in Gori in the Russian Empire (now Georgia), Stalin attended the Tbilisi Spiritual Seminary before joining the Marxist Russian Social Democratic Labour Party. He edited the party's newspaper, ''Pravda'', and raised funds for Vladimir Lenin's Bolshevik faction via robberies, kidnappings and protection ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bishkek
Bishkek ( ky, Бишкек), ), formerly Pishpek and Frunze, is the capital and largest city of Kyrgyzstan. Bishkek is also the administrative centre of the Chüy Region. The region surrounds the city, although the city itself is not part of the region but rather a region-level unit of Kyrgyzstan. Bishkek is situated near the Kazakhstan–Kyrgyzstan border. Its population was 1,074,075 in 2021. In 1825, the Khanate of Kokand established the fortress of Pishpek to control local caravan routes and to collect tribute from Kyrgyz tribes. On 4 September 1860, with the approval of the Kyrgyz, Russian forces led by Colonel Apollon Zimmermann destroyed the fortress. In the present day, the fortress ruins can be found just north of Jibek jolu street, near the new main mosque. In 1868, a Russian settlement was established on the site of the fortress under its original name, Pishpek. It lay within the General Governorship of Russian Turkestan and its Semirechye Oblast. In 1925, the K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doctors' Plot
The "Doctors' plot" affair, group=rus was an alleged conspiracy of prominent Healthcare in Russia, Soviet medical specialists to murder leading government and party officials. It was also known as the case of saboteur doctors or killer doctors. In 1951–1953, a group of predominantly Jewish doctors from Moscow were accused of a conspiracy to assassinate Soviet Union, Soviet leaders. This was later accompanied by publications of antisemitic character in the media, which talked about the threats of Zionism and condemned people with Jewish surnames. Following this, many doctors, both Jews and non-Jews, were dismissed from their jobs, arrested, and tortured to produce admissions. A few weeks after the Death and state funeral of Joseph Stalin, death of Stalin in 1953, the new Soviet leadership said there was a lack of evidence regarding the Doctors' plot and the case was dropped. Soon after, it was declared that the case had been a fabrication. Beginnings A number of theories attem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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