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György Szigeti
György Szigeti (29 January 1905 – 27 November 1978), "Fizikai Szemle 1999/5 - Zsolt Bor: Optics by Hungarians" (with Zoltan Bay), József Attila University, Szeged, Hungary, 1999, webpage: KFKI-Hungary-Bor also known as Gyorgy Szigeti, was a Hungarian physicist and engineer who developed tungsten lamps. In 1923 at Tungsram Ltd., a research laboratory was established for improving light sources, mainly electric bulbs. The head of that laboratory was Ignácz Pfeiffer (1867-1941), whose research staff included Szigeti, along with Zoltán Bay (1900-1992), Tivadar Millner, Imre Bródy (1891-1944), Ernő Winter (1897-1971), and others. Szigeti worked together with Zoltán Bay on metal-vapor lamps and fluorescent light sources. They received a U.S. patent on "electroluminescent light sources" that were made of silicon carbide; these light sources were the ancestors of light-emitting diode A light-emitting diode (LED) is a semiconductor device that emit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Szeged
Szeged ( , ; see also #Etymology, other alternative names) is List of cities and towns of Hungary#Largest cities in Hungary, the third largest city of Hungary, the largest city and regional centre of the Southern Great Plain and the county seat of Csongrád-Csanád County, Csongrád-Csanád county. The University of Szeged is one of the most distinguished universities in Hungary. The Szeged Open Air (Theatre) Festival (first held in 1931) is one of the main attractions, held every summer and celebrated as the Day of the City on 21 May. Etymology The name ''Szeged'' might come from an old Hungarian language, Hungarian word for 'corner' (), pointing to the turn of the river Tisza that flows through the city. Others say it derives from the Hungarian word which means 'island'. Others still contend that means 'dark blond' () – a reference to the color of the water where the rivers Tisza and Mureș (river), Maros merge. The city has its own name in a number of foreign language ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hungary
Hungary ( hu, Magyarország ) is a landlocked country in Central Europe. Spanning of the Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and Slovenia to the southwest, and Austria to the west. Hungary has a population of nearly 9 million, mostly ethnic Hungarians and a significant Romani minority. Hungarian, the official language, is the world's most widely spoken Uralic language and among the few non-Indo-European languages widely spoken in Europe. Budapest is the country's capital and largest city; other major urban areas include Debrecen, Szeged, Miskolc, Pécs, and Győr. The territory of present-day Hungary has for centuries been a crossroads for various peoples, including Celts, Romans, Germanic tribes, Huns, West Slavs and the Avars. The foundation of the Hungarian state was established in the late 9th century AD with the conquest of the Carpathian Basin by Hungar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hungarians
Hungarians, also known as Magyars ( ; hu, magyarok ), are a nation and ethnic group native to Hungary () and historical Hungarian lands who share a common culture, history, ancestry, and language. The Hungarian language belongs to the Uralic language family. There are an estimated 15 million ethnic Hungarians and their descendants worldwide, of whom 9.6 million live in today's Hungary. About 2–3 million Hungarians live in areas that were part of the Kingdom of Hungary before the Treaty of Trianon in 1920 and are now parts of Hungary's seven neighbouring countries, Slovakia, Ukraine, Romania, Serbia, Croatia, Slovenia, and Austria. Significant groups of people with Hungarian ancestry live in various other parts of the world, most of them in the United States, Canada, Germany, France, the United Kingdom, Chile, Brazil, Australia, and Argentina. Hungarians can be divided into several subgroups according to local linguistic and cultural characteristics; subgroups with distinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physicist
A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate causes of phenomena, and usually frame their understanding in mathematical terms. Physicists work across a wide range of research fields, spanning all length scales: from sub-atomic and particle physics, through biological physics, to cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: experimental physicists who specialize in the observation of natural phenomena and the development and analysis of experiments, and theoretical physicists who specialize in mathematical modeling of physical systems to rationalize, explain and predict natural phenomena. Physicists can apply their knowledge towards solving practical problems or to developing new technologies (also known as applie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineer
Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin ) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of an engineer typically include a four-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus four to six years of peer-reviewed professiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tungsten
Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isolated as a metal in 1783. Its important ores include scheelite and wolframite, the latter lending the element its alternate name. The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all known elements barring carbon (which sublimes at normal pressure), melting at . It also has the highest boiling point, at . Its density is , comparable with that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work. However, pure single-crystalline tungsten is more ductile and can be cut with a hard-steel hacksaw. Tungsten occurs in many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tungsram
Tungsram was a manufacturing company located in Hungary and known for their light bulbs and electronics. Established in Újpest (today part of Budapest, Hungary) in 1896, it initially produced telephones, wires and switchboards. The name "Tungsram" is a portmanteau of "tungsten" and "wolfram" (the two common names of the metal used for making light bulb filaments). Before becoming nationalized by the Communist government in 1945, the company was the world's third largest manufacturer of light bulbs and radiotubes, after the American General Electric and RCA companies. History On 13 December 1904, Hungarian Sándor Just and Croatian Franjo Hanaman were granted Hungarian patent no. 34541 for the world's first tungsten filament bulb that lasted longer and produced brighter light than a carbon filament. The co-inventors licensed their patent to the company, which came to be named Tungsram after the eponymous tungsten incandescent bulbs, which are still called Tungsram bulbs in m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoltán Bay
Zoltán () is a Hungarian masculine given name. The name days for this name are 8 March and 23 June in Hungary, and 7 April in Slovakia. Zoltána is the feminine version. Notable people * Zoltán of Hungary * Zoltan Bathory, guitarist of heavy metal band Five Finger Death Punch * Zoltán Lajos Bay * Zoltán Berczik, six times European Champion in table-tennis. * Zoltán Czibor * Zoltán Czukor * Zoltán Dani * Zoltán Gera (actor) * Zoltán Gera (footballer) – Fulham F.C. * Zoltán Halmay * Zoltán Horváth (other) – several people * Zoltan Istvan – American writer and futurist * Zoltan Kaszas – American comedian * Zoltán Kammerer * Zoltán Kocsis, pianist, conductor, and composer * Zoltán Kodály, composer, creator of the Kodály-method. * Zoltán Korda * Zoltán Kovács (ice hockey), ice hockey coach and administrator, recipient of the Paul Loicq Award * Zoltán Lajos Bay, physicist. * Zoltán Latinovits, Hungarian actor, director. * Zoltán Magyar – 2-t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tivadar Millner
Tivadar Millner (7 March 1899 – 28 October 1988) "Fizikai Szemle 1999/5 - Zsolt Bor: OPTICS BY HUNGARIANS" (with Pál Selényi), József Attila University, Szeged, Hungary, 1999, webpage: KFKI-Hungary-Bor was a Hungarian chemical engineer, educator, and inventor who developed tungsten lamps. "GE Lighting 2" (including Tivadar Millner), Rövid Történet, GE Lighting Tungsram, 1996, webpage: Tungsram-History Working at Tungsram, Tivadar Millner, along with Pál Túry, co-developed large-crystal tungsten technology for the production of more reliable and longer-lasting coiled filament lamps. In 1923 at Tungsram Ltd., a research laboratory was established for improving light sources, mainly electric bulbs. The head of that laboratory was Ignácz Pfeiffer (1867-1941), whose research staff included Tivadar Millner, along with Zoltán Bay (1900-1992), Imre Bródy (1891-1944), György Szigeti György Szigeti (29 January 1905 – 27 November 1978), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imre Bródy
Imre Bródy (1891, Gyula, HungaryAntal Papp: Magyarország (Hungary), Panoráma, Budapest, 1982, , p. 860, pp. 453-456–1944, Mühldorf) was a Hungarian physicist who invented in 1930 the krypton-filled fluorescent lamps (also known as the krypton electric bulb), "The Contribution of Hungarians to Universal Culture" (with inventors), Embassy of the Republic of Hungary in Damascus, Syria, 2006, webpage: HungEMB-Culture. with fellow-Hungarian inventors Emil Theisz, Ferenc Kőrösy and Tivadar Millner. He developed the technology of the production of krypton bulbs together with Michael Polanyi ( hu, Polányi Mihály). He was the nephew of writer Sándor Bródy. Career Educated in Budapest, he wrote his doctoral thesis on the chemical constant of monatomic gases. After teaching in a high school, he became an assistant professor in applied physics at the University of Sciences and accomplished valuable theoretical work investigating specific heat and molecular he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernő Winter
Ernő Winter (15 March 1897 – 2 June 1971) "Fizikai Szemle 1999/5 - Zsolt Bor: OPTICS BY HUNGARIANS" (with Ernő Winter József Attila University, Szeged, Hungary, 1999, webpage:KFKI-Hungary-Bor was an engineer who developed barium lamps."GE Lighting 2" (including Ernő Winter), Rövid Történet, GE Lighting Tungsram, 1996, webpageTungsram-History. Working at Tungsram, Ernő Winter, along with others, co-developed tungsten technology for the production of more reliable and longer-lasting coiled-filament lamps. In 1923 at Tungsram Ltd., a research laboratory was established for improving light sources, mainly electric bulbs. The head of that laboratory was Ignác Pfeifer (1867–1941), whose research staff included Ernő Winter, along with Tivadar Millner (1899–1988), Zoltán Bay (1900–1992), Imre Bródy (1891–1944), György Szigeti György Szigeti (29 January 1905 – 27 November 1978), "Fizikai Szemle 1999/5 - Zsolt Bor: Optics by Hungarians" (with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light-emitting Diode
A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device. Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared (IR) light. Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics. The first visible-light LEDs were of low intensity and limited to red. Early LEDs were often used as indicator lamps, replacing small incandescent bulbs, and in seven-segment displays. Later developments produced LEDs available in visible, ultraviolet (UV) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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