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Ioan-Ioviț Popescu
Ioan-Iovitz "Iovitzu" Popescu (born October 1, 1932) is a Romanian physicist and linguist, emeritus professor at University of Bucharest, Faculty of Physics, and member of the Romanian Academy. In the field of physics, he is best known for his work on gas discharges and plasma physics, as well as his collaborations with Denisa Popescu in laser spectroscopy. He also had pioneering contributions in the field of gamma-ray lasers with Carl B. Collins and Silviu Olariu. As of 2006, the focus of Iovitzu Popescu's work has shifted towards the field of linguistics, in cooperation with leading linguist . Early life Iovitzu Popescu was born in Burila Mare village, Mehedinți County. He is the son of Dumitru Popescu and Elvira (''née'' Iovitz). In 1951 he graduated from Traian High School in Turnu Severin. Between 1951 and 1955 he was a student at University of Bucharest, Faculty of Mathematics and Physics, from which he graduated in 1955 with the thesis "Sodium-Vapor Lamp", sup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romania
Romania ( ; ro, România ) is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern, and Southeast Europe, Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, Serbia to the southwest, Moldova to the east, and the Black Sea to the southeast. It has a predominantly Temperate climate, temperate-continental climate, and an area of , with a population of around 19 million. Romania is the List of European countries by area, twelfth-largest country in Europe and the List of European Union member states by population, sixth-most populous member state of the European Union. Its capital and largest city is Bucharest, followed by Iași, Cluj-Napoca, Timișoara, Constanța, Craiova, Brașov, and Galați. The Danube, Europe's second-longest river, rises in Germany's Black Forest and flows in a southeasterly direction for , before emptying into Romania's Danube Delta. The Carpathian Mountains, which cross Roma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hafnium Controversy
The hafnium controversy is a debate over the possibility of 'triggering' rapid energy releases, via gamma ray emission, from a nuclear isomer of hafnium, 178m2Hf. The energy release is potentially 5 orders of magnitude (100,000 times) more energetic than a chemical reaction, but 2 orders of magnitude less than a nuclear fission reaction. In 1998, a group led by Carl Collins of the University of Texas at Dallas reported having successfully initiated such a trigger. Signal-to-noise ratios were small in those first experiments, and to date no other group has been able to duplicate these results. Peter Zimmerman described claims of weaponization potential as having been based on " very bad science". Background 178m2Hf is a particularly attractive candidate for induced gamma emission (IGE) experiments, because of its high density of stored energy, 2.5 MeV per nucleus, and long 31-year half life for storing that energy. If radiation from some agent could "trigger" a release of that sto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantitative Linguistics
Quantitative linguistics (QL) is a sub-discipline of general linguistics and, more specifically, of mathematical linguistics. Quantitative linguistics deals with language learning, language change, and application as well as structure of natural languages. QL investigates languages using statistical methods; its most demanding objective is the formulation of language laws and, ultimately, of a general theory of language in the sense of a set of interrelated languages laws. Synergetic linguistics was from its very beginning specifically designed for this purpose. QL is empirically based on the results of language statistics, a field which can be interpreted as statistics of languages or as statistics of any linguistic object. This field is not necessarily connected to substantial theoretical ambitions. Corpus linguistics and computational linguistics are other fields which contribute important empirical evidence. History The earliest QL approaches date back in the ancient Greek and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aether Theories
In physics, aether theories (also known as ether theories) propose the existence of a medium, a space-filling substance or field as a transmission medium for the propagation of electromagnetic or gravitational forces. Since the development of special relativity, theories using a substantial aether fell out of use in modern physics, and are now replaced by more abstract models. This early modern aether has little in common with the aether of classical elements from which the name was borrowed. The assorted theories embody the various conceptions of this medium and substance. Historical models Luminiferous aether Isaac Newton suggests the existence of an aether in the Third Book of ''Opticks'' (1st ed. 1704; 2nd ed. 1718): "Doth not this aethereal medium in passing out of water, glass, crystal, and other compact and dense bodies in empty spaces, grow denser and denser by degrees, and by that means refract the rays of light not in a point, but by bending them gradually in cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dallas
Dallas () is the List of municipalities in Texas, third largest city in Texas and the largest city in the Dallas–Fort Worth metroplex, the List of metropolitan statistical areas, fourth-largest metropolitan area in the United States at 7.5 million people. It is the largest city in and County seat, seat of Dallas County, Texas, Dallas County with portions extending into Collin County, Texas, Collin, Denton County, Texas, Denton, Kaufman County, Texas, Kaufman and Rockwall County, Texas, Rockwall counties. With a 2020 United States census, 2020 census population of 1,304,379, it is the List of United States cities by population, ninth most-populous city in the U.S. and the List of cities in Texas by population, third-largest in Texas after Houston and San Antonio. Located in the North Texas region, the city of Dallas is the main core of the largest metropolitan area in the Southern United States and the largest inland metropolitan area in the U.S. that lacks any navigable link ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Texas At Dallas
The University of Texas at Dallas (UTD or UT Dallas) is a public research university in Richardson, Texas. It is one of the largest public universities in the Dallas area and the northernmost institution of the University of Texas system. It was initially founded in 1961 as a private research arm of Texas Instruments. The young university has been characterized by rapid growth in research output and its competitive undergraduate admissions policies since its inception. Less than 47 years after its founding, the Carnegie Foundation had classified the university as a doctoral research university with "Highest Research Activity"—faster than any other school in Texas. The university is associated with four Nobel Prizes and has members of the National Academy of Sciences and National Academy of Engineering on its faculty with the most notable research projects including the areas of Space Science, Bioengineering, Cybersecurity, Nanotechnology, and Behavioral and Brain Sciences. UT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Spectroscopy
Atomic spectroscopy is the study of the electromagnetic radiation absorbed and emitted by atoms. Since unique elements have characteristic (signature) spectra, atomic spectroscopy, specifically the electromagnetic spectrum or mass spectrum, is applied for determination of elemental compositions. It can be divided by atomization source or by the type of spectroscopy used. In the latter case, the main division is between optical and mass spectrometry. Mass spectrometry generally gives significantly better analytical performance, but is also significantly more complex. This complexity translates into higher purchase costs, higher operational costs, more operator training, and a greater number of components that can potentially fail. Because optical spectroscopy is often less expensive and has performance adequate for many tasks, it is far more common. Atomic absorption spectrometers are one of the most commonly sold and used analytical devices. Atomic spectroscopy Electrons exist ... [...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] |
Eugen Bădărău
Eugen is a masculine given name which may refer to: * Archduke Eugen of Austria (1863–1954), last Habsburg Grandmaster of the Teutonic Order from 1894 to 1923 * Prince Eugen, Duke of Närke (1865–1947), Swedish painter, art collector, and patron of artists * Prince Eugen of Schaumburg-Lippe (1899–1929) * Prince Eugen of Bavaria (1925–1997) * Eugen Bacon, female African-Australian author * Eugen Beza (born 1978), Romanian football manager and former player * Eugen Bleuler (1857–1939), Swiss psychiatrist and eugenicist * Eugen von Böhm-Bawerk (1851–1914), Austrian economist * Eugen Bolz (1881–1945), German politician and member of the anti-Nazi resistance * Eugen Chirnoagă (1891–1965), Romanian chemist * Eugen Cicero (1940–1997), Romanian-German jazz pianist * Eugen Ciucă (1913–2005), Romanian-American artist * Eugen d'Albert (1864–1932), Scottish-born pianist and composer * Eugen Doga (born 1937), Romanian composer from Moldova * Eugen Drewermann (born 1940 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radu Grigorovici
Radu Grigorovici (November 20, 1911 – August 2, 2008) was a Romanian physicist. Biography Radu Grigorovici was born on November 20, 1911 in Chernivtsi, being the only son of the Bucovina Social Democrats Gheorghe and Tatiana Grigorovici. After graduating from ''Aron Pumnul'' High School (1928) he studied at the ''Chernivtsi University'', and in 1931 he got a degree in chemical sciences and in 1934 a degree in physical sciences. At the same university, he was then a trainer at the ''Experimental Physics Laboratory'' of Professor Eugen Bădărău. In 1936 he transferred to the Faculty of Sciences of the University of Bucharest, where Bădărău had been called as head of the Laboratory of Molecular, Acoustic and Optical Physics. In 1938 he obtained a PhD in physical sciences with a dissertation on the disruptive potential of mercury vapor. He climbed the ranks of the university hierarchy, becoming an associate professor in 1949. Between 1947-1957 he worked in parallel in the li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turnu Severin
Drobeta-Turnu Severin (), colloquially Severin, is a city in Mehedinți County, Oltenia, Romania, on the northern bank of the Danube, close to the Iron Gates. "Drobeta" is the name of the ancient Dacian and Roman towns at the site, and the modern town of Turnu Severin received the additional name of Drobeta during Nicolae Ceaușescu's national-communist dictatorship as part of his myth-making efforts. The city administers three villages: Dudașu Schelei, Gura Văii, and Schela Cladovei. The city's population is 92,617 (2011), up from 18,628 in 1900. Etymology Drobeta Drobeta was a Dacian town.Drobeta–Turnu Severin at britannica.com, accessed 2021-10-14. The Roman castrum built by Emperor Trajan at the site preserved the Dacian n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traian National College
Traian National College ( ro, Colegiul Național Traian) is a high school located at 6 Carol I Boulevard in Drobeta-Turnu Severin, Romania. The idea of a high school for Turnu Severin appeared in 1864, when the nascent Romanian state implemented an education reform; at the time, local students had to go to Craiova or elsewhere for high school.Pruna, p. 2 A normal school opened in 1877; it was named after the Roman emperor Trajan due to his association with the local Trajan's Bridge. Meanwhile, an apprentices' school was founded in 1872.Pruna, p. 3 The two institutions had shut down by 1883, when their furniture and books were used to establish a new gymnasium. The first years were difficult: the school was located in several rented buildings and in the old town hall; there were a maximum of four teachers for nearly 80 students.Pruna, p. 4 A permanent building, designed by Alexandru Săvulescu, was approved in 1890. Prime Minister Gheorghe Manu attended the groundbreaking, alon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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