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Edward Drobyshevski
Edward Mikhailovich Drobyshevski (russian: Дробышевский, Эдуард Михайлович) (1936-2012), was a Russian astro- and plasma physicist. Career E.M. Drobyshevski was born in 1936. In 1959 he graduated the Leningrad Polytechnical Institute as an engineer-researcher. He was a Candidate of Physico-Mathematical sciences in 1965 and Doctor of Physico-Mathematical sciences in 1982. His scientific/research career has been connected with the Ioffe Physico-Technical Institute, Ioffe Physical-Technical Institute of the Russian Academy of Sciences where his posts have been senior laboratory assistant (1959), junior scientist (1960), senior scientist (1979), leading scientist (1986), laboratory head (1991–2004) and major scientist (1993–gainward). Contributions He has authored many theoretical and experimental studies on plasma physics, magnetohydrodynamics, MHD, different branches of astrophysics (magnetic and binary stars, Solar System evolution, origin of asteroids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ioffe Physico-Technical Institute
The Ioffe Physical-Technical Institute of the Russian Academy of Sciences (for short, Ioffe Institute, russian: Физико-технический институт им. А. Ф. Иоффе) is one of Russia's largest research centers specialized in physics and technology. The institute was established in 1918 in Petrograd (now St. Petersburg) and run for several decades by Abram Ioffe. The institute is a member of the Russian Academy of Sciences. Present structure of the institute As of 2019, the Ioffe institute employed about 1500 people, around 1000 of whom were scientific researchers (including 560 with a PhD degree and 250 with a Doktor Nauk degree). Most of the research staff members are top graduates of the St. Petersburg (former Leningrad) universities. From 2013 until mid-May 2018 the Ioffe institute was under formal jurisdiction of the Federal Agency for Scientific Organizations (FASO Russia), now it is under jurisdiction of the established in May 2018 Ministry of S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daemons In Astrophysics
A demon is a malevolent supernatural being in religion, occultism, mythology, folklore, and fiction. Demon, daemon or dæmon may also refer to: Entertainment Fictional entities * Daemon (G.I. Joe), a character in the G.I. Joe universe * Dæmon (''His Dark Materials''), the term for a manifestation of a person's soul in Philip Pullman's trilogy * Daemon (Digimon) (evil character from Digimon) * Demon (''Dungeons & Dragons''), the most widespread race of fiends * Demon (''Supernatural''), a fictional villains of series * Daemon, a character in the TV series ''ReBoot'' * Daemon Blackfyre, a character in George R. R. Martin's ''A Song of Ice and Fire'' series * Demons (Shannara), characters in Shannara fantasy novels * Demon or Dimension traveler, a class of characters in the '' MythAdventures'' series * Characters in the '' Artemis Fowl'' series * Characters which appear in '' The Demonata'', by Darren Shan * Azazel (''Supernatural''), a character AKA "The Demon" * Etrigan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Physicists
This list of Russian physicists includes the famous physicists from the Russian Empire, the Soviet Union and the Russian Federation. Alphabetical list __NOTOC__ A * Alexei Abrikosov, discovered how magnetic flux can penetrate a superconductor (the Abrikosov vortex), Nobel Prize winner * Franz Aepinus, related electricity and magnetism, proved the electric nature of pyroelectricity, explained electric polarization and electrostatic induction, invented achromatic microscope * Zhores Alferov, inventor of modern heterotransistor, Nobel Prize winner * Sergey Alekseenko, director of the Kutateladze Institute of Thermophysics, Global Energy Prize recipient * Artem Alikhanian, a prominent researcher of cosmic rays, inventor of wide-gap track spark chamber * Abram Alikhanov, nuclear physicist, a prominent researcher of cosmic rays, built the first nuclear reactors in the USSR, founder of Institute for Theoretical and Experimental Physics (ITEP) * Semen Altshuler, researche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pravda
''Pravda'' ( rus, Правда, p=ˈpravdə, a=Ru-правда.ogg, "Truth") is a Russian broadsheet newspaper, and was the official newspaper of the Communist Party of the Soviet Union, when it was one of the most influential papers in the country with a circulation of 11 million. The newspaper began publication on 5 May 1912 in the Russian Empire, but was already extant abroad in January 1911. It emerged as a leading newspaper of the Soviet Union after the October Revolution. The newspaper was an organ of the Central Committee of the CPSU between 1912 and 1991. After the dissolution of the Soviet Union ''Pravda'' was sold off by Russian President Boris Yeltsin to a Greek business family in 1996, and the paper came under the control of their private company Pravda International. In 1996, there was an internal dispute between the owners of Pravda International and some of the ''Pravda'' journalists which led to ''Pravda'' splitting into different entities. The Communis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunguska Event
The Tunguska event (occasionally also called the Tunguska incident) was an approximately 12- megaton explosion that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia, on the morning of June 30, 1908. The explosion over the sparsely populated Eastern Siberian Taiga flattened an estimated 80 million trees over an area of of forest, and eyewitness reports suggest that at least three people may have died in the event. The explosion is generally attributed to a meteor air burst: the atmospheric explosion of a stony asteroid about in size. The supposed asteroid approached from the east-southeast, and likely with a relatively high speed of about (~ Ma 80). It is classified as an impact event, even though no impact crater has been found; the object is thought to have disintegrated at an altitude of rather than having hit the surface of the Earth. The Tunguska event is the largest impact event on Earth in recorded histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmogonical
Cosmogony is any model concerning the origin of the cosmos or the universe. Overview Scientific theories In astronomy, cosmogony refers to the study of the origin of particular astrophysical objects or systems, and is most commonly used in reference to the origin of the universe, the Solar System, or the Earth–Moon system. The prevalent cosmological model of the early development of the universe is the Big Bang theory. Sean M. Carroll, who specializes in theoretical cosmology and field theory, explains two competing explanations for the origins of the singularity, which is the center of a space in which a characteristic is limitless. (One example of a singularity is the singularity of a black hole, where gravity becomes infinite.) It is generally accepted that the universe began at a point of singularity. When the singularity of the universe started to expand, the Big Bang occurred, which evidently began the universe. The other explanation, held by proponents such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4009 Drobyshevskij
4009 Drobyshevskij, provisional designation , is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately in diameter. It was discovered on 13 March 1977, by Soviet–Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula, and named after Russian astrophysicist Edward Drobyshevski. The C-type asteroid has a relatively short rotation period of 3.875 hours. Orbit and classification ''Drobyshevskij'' is a core member of the Themis family (), a very large family of carbonaceous asteroids, named after 24 Themis, the family's parent body. It orbits the Sun in the outer main-belt at a distance of 2.7–3.6 AU once every 5 years and 7 months (2,032 days; semi-major axis of 3.14 AU). Its orbit has an eccentricity of 0.13 and an inclination of 2 ° with respect to the ecliptic. The body's observation arc begins with a precovery taken at the Goethe Link Observatory in Novemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Astronomical Union
The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and development through global cooperation. It was founded in 1919 and is based in Paris, France. The IAU is composed of individual members, who include both professional astronomers and junior scientists, and national members, such as professional associations, national societies, or academic institutions. Individual members are organised into divisions, committees, and working groups centered on particular subdisciplines, subjects, or initiatives. As of 2018, the Union had over 13,700 individual members, spanning 90 countries, and 82 national members. Among the key activities of the IAU is serving as a forum for scientific conferences. It sponsors nine annual symposia and holds a triannual General Assembly that sets policy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Hole
A black hole is a region of spacetime where gravity is so strong that nothing, including light or other electromagnetic waves, has enough energy to escape it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of no escape is called the event horizon. Although it has a great effect on the fate and circumstances of an object crossing it, it has no locally detectable features according to general relativity. In many ways, a black hole acts like an ideal black body, as it reflects no light. Moreover, quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is of the order of billionths of a kelvin for stellar black holes, making it essentially impossible to observe directly. Objects whose gravitational fields are too strong for light to escape were fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolysis Of Water
Electrolysis of water, also known as electrochemical water splitting, is the process of using electricity to decompose water into oxygen and hydrogen gas by electrolysis. Hydrogen gas released in this way can be used as hydrogen fuel, or remixed with the oxygen to create oxyhydrogen gas, which is used in welding and other applications. Electrolysis of water requires a minimum potential difference of 1.23 volts, though at that voltage external heat is required. E lectrolysis is rarely used in industrial applications since hydrogen can be produced less expensively from fossil fuels. History In 1789, Jan Rudolph Deiman and Adriaan Paets van Troostwijk used an electrostatic machine to make electricity that was discharged on gold electrodes in a Leyden jar with water. In 1800 Alessandro Volta invented the voltaic pile, and a few weeks later English scientists William Nicholson and Anthony Carlisle used it to electrolyse water. In 1806 Humphry Davy reported the results o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetohydrodynamics
Magnetohydrodynamics (MHD; also called magneto-fluid dynamics or hydromagnetics) is the study of the magnetic properties and behaviour of electrically conducting fluids. Examples of such magnetofluids include plasmas, liquid metals, salt water, and electrolytes. The word ''magnetohydrodynamics'' is derived from ' meaning magnetic field, ' meaning water, and ' meaning movement. The field of MHD was initiated by Hannes Alfvén, for which he received the Nobel Prize in Physics in 1970. The fundamental concept behind MHD is that magnetic fields can induce currents in a moving conductive fluid, which in turn polarizes the fluid and reciprocally changes the magnetic field itself. The set of equations that describe MHD are a combination of the Navier–Stokes equations of fluid dynamics and Maxwell’s equations of electromagnetism. These differential equations must be solved simultaneously, either analytically or numerically. History The first r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minor Body
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. Of the roughly one million known asteroids the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 AU from the Sun, in the main asteroid belt. Asteroids are generally classified to be of three types: C-type, M-type, and S-type. These were named after and are generally identified with carbonaceous, metallic, and silicaceous compositions, respectively. The size of asteroids varies greatly; the largest, Ceres, is almost across and qualifies as a dwarf planet. The total mass of all the asteroids combined is only 3% that of Earth's Moon. The majority of main belt asteroids follow slightly elliptical, stable orbits, revolving in the same direction as the Earth and taking from three to six years to compl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
