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Herbert Mataré
Herbert Franz Mataré (22 September 1912 – 2 September 2011) was a German physicist. The focus of his research was the field of semiconductor research. His best-known work is the first functional European transistor, which he developed and patented together with Heinrich Welker in the vicinity of Paris in 1948, independent from the Bell Labs engineers who had developed the first transistor shortly before. The final 20 years of his life Mataré split time between his homes in Hückelhoven, Germany and Malibu, California. He was born in Aachen. Biography Mataré completed his studies in mathematics, chemistry, electrochemistry, nuclear physics, and solid-state physics at the Technical University of Aachen with degree "Diplom-Ingenieur" in Applied Physics. In addition, he studied mathematics, physics, and chemistry at the University of Geneva. In 1939 he joined the Telefunken research laboratory in Berlin. At that time it became obvious that the miniaturization of vacuum tubes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert F
Herbert may refer to: People Individuals * Herbert (musician), a pseudonym of Matthew Herbert Name * Herbert (given name) * Herbert (surname) Places Antarctica * Herbert Mountains, Coats Land * Herbert Sound, Graham Land Australia * Herbert, Northern Territory, a rural locality * Herbert, South Australia. former government town * Division of Herbert, an electoral district in Queensland * Herbert River, a river in Queensland * County of Herbert, a cadastral unit in South Australia Canada * Herbert, Saskatchewan, Canada, a town * Herbert Road, St. Albert, Canada New Zealand * Herbert, New Zealand, a town * Mount Herbert (New Zealand) United States * Herbert, Illinois, an unincorporated community * Herbert, Michigan, a former settlement * Herbert Creek, a stream in South Dakota * Herbert Island, Alaska Arts, entertainment, and media Fictional entities * Herbert (Disney character) * Herbert Pocket (''Great Expectations'' character), Pip's close friend and roommate in the Cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Schottky
Walter Hans Schottky (23 July 1886 – 4 March 1976) was a German physicist who played a major early role in developing the theory of electron and ion emission phenomena, invented the screen-grid vacuum tube in 1915 while working at Siemens, co-invented the ribbon microphone and ribbon loudspeaker along with Dr. Erwin Gerlach in 1924 and later made many significant contributions in the areas of semiconductor devices, technical physics and technology. Early life Schottky's father was mathematician Friedrich Hermann Schottky (1851–1935). Schottky had one sister and one brother. His father was appointed professor of mathematics at the University of Zurich in 1882, and Schottky was born four years later. The family then moved back to Germany in 1892, where his father took up an appointment at the University of Marburg. Schottky graduated from the Steglitz Gymnasium in Berlin in 1904. He completed his B.S. degree in physics, at the University of Berlin in 1908, and he comple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aulnay-sous-Bois
Aulnay-sous-Bois () is a commune in the Seine-Saint-Denis department in the Île-de-France region in the north-eastern suburbs of Paris, France. It is located from the Kilometre zero. The inhabitants of the commune are known as ''Aulnaysiens'' or ''Aulnaysiennes'' in French. The commune has been awarded four flowers by the ''National Council of Towns and Villages in Bloom'' in the ''Competition of cities and villages in Bloom''. Geography Situation Aulnay-sous-Bois is located in the Paris area and is 19 km north-east of Notre-Dame Cathedral, 1 km east of Le Bourget Airport, and 5 km south-west of Charles de Gaulle Airport. The commune stretches over a length of 6.5 km from north to south and a width ranging from 1.4 to 4.3 km from east to west and covers an area of 1,620 hectares. The town is surrounded by the A3 autoroute in the west which joins the A1 autoroute in the north. Route nationale 2 passes through the heart of the commune from west to eas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kassel
Kassel (; in Germany, spelled Cassel until 1926) is a city on the Fulda River in northern Hesse, Germany. It is the administrative seat of the Regierungsbezirk Kassel and the district of the same name and had 201,048 inhabitants in December 2020. The former capital of the state of Hesse-Kassel has many palaces and parks, including the Bergpark Wilhelmshöhe, which is a UNESCO World Heritage Site. Kassel is also known for the '' documenta'' exhibitions of contemporary art. Kassel has a public university with 25,000 students (2018) and a multicultural population (39% of the citizens in 2017 had a migration background). History Kassel was first mentioned in 913 AD, as the place where two deeds were signed by King Conrad I. The place was called ''Chasella'' or ''Chassalla'' and was a fortification at a bridge crossing the Fulda river. There are several yet unproven assumptions of the name's origin. It could be derived from the ancient ''Castellum Cattorum'', a castle of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wabern, Hesse
Wabern is a municipality in the Schwalm-Eder district in northern Hesse, Germany. It lies on the Main-Weser Railway between Kassel and Frankfurt. From Wabern, the Edersee Railway runs to Bad Wildungen. Geography Location The main centre of Wabern lies on the Eder and Schwalm floodplain, a few kilometres south of where the Schwalm empties into the Eder. Constituent communities The community of Wabern consists of ten centres, the main centre, bearing the same name as the whole municipality, and the nine outlying villages of Hebel, Rockshausen, Falkenberg, Udenborn, Unshausen, Uttershausen, Zennern, Niedermöllrich and Harle. Economy For a long time, Wabern was an important railway hub, where the Sauerland Line to Brilon branched off the Frankfurt-Kassel-Hanover mainline. Today the branchline ends at Bad Wildungen. A big sugar factory processes the sugar beets in the autumn. These are grown over a wide area around the community. Politics Mayors In June 2015 Claus Steinmetz (SPD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thuringia
Thuringia (; german: Thüringen ), officially the Free State of Thuringia ( ), is a state of central Germany, covering , the sixth smallest of the sixteen German states. It has a population of about 2.1 million. Erfurt is the capital and largest city. Other cities are Jena, Gera and Weimar. Thuringia is bordered by Bavaria, Hesse, Lower Saxony, Saxony-Anhalt, and Saxony. It has been known as "the green heart of Germany" () from the late 19th century due to its broad, dense forest. Most of Thuringia is in the Saale drainage basin, a left-bank tributary of the Elbe. Thuringia is home to the Rennsteig, Germany's best-known hiking trail. Its winter resort of Oberhof makes it a well-equipped winter sports destination – half of Germany's 136 Winter Olympic gold medals had been won by Thuringian athletes as of 2014. Thuringia was favoured by or was the birthplace of three key intellectuals and leaders in the arts: Johann Sebastian Bach, Johann Wolfgang von Goethe, and Fried ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Receiver (radio)
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves (electromagnetic waves of radio frequency) and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation. Radio receivers are essential components of all systems that use radio. The information produced by the receiver may be in the form of sound, video (television), or digital data. A radio receiver may be a separate piece of electronic equipment, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Super High Frequency
Super high frequency (SHF) is the ITU designation for radio frequencies (RF) in the range between 3 and 30 gigahertz (GHz). This band of frequencies is also known as the centimetre band or centimetre wave as the wavelengths range from one to ten centimetres. These frequencies fall within the microwave band, so radio waves with these frequencies are called microwaves. The small wavelength of microwaves allows them to be directed in narrow beams by aperture antennas such as parabolic dishes and horn antennas, so they are used for point-to-point communication and data links This article from the beginning of the microwave era predicted the future value of microwaves for point-to-point communication. and for radar. This frequency range is used for most radar transmitters, wireless LANs, satellite communication, microwave radio relay links, satellite phones (S band), and numerous short range terrestrial data links. They are also used for heating in industrial microwave heatin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silesia
Silesia (, also , ) is a historical region of Central Europe that lies mostly within Poland, with small parts in the Czech Republic and Germany. Its area is approximately , and the population is estimated at around 8,000,000. Silesia is split into two main subregions, Lower Silesia in the west and Upper Silesia in the east. Silesia has a diverse culture, including architecture, costumes, cuisine, traditions, and the Silesian language (minority in Upper Silesia). Silesia is along the Oder River, with the Sudeten Mountains extending across the southern border. The region contains many historical landmarks and UNESCO World Heritage Sites. It is also rich in mineral and natural resources, and includes several important industrial areas. The largest city and Lower Silesia's capital is Wrocław; the historic capital of Upper Silesia is Opole. The biggest metropolitan area is the Upper Silesian metropolitan area, the centre of which is Katowice. Parts of the Czech city of Ostrav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lubiąż
Lubiąż (; german: Leubus) is a village (former city) on the east bank of the Odra (Oder) River, in the administrative district of Gmina Wołów, within Wołów County, Lower Silesian Voivodeship, in south-western Poland. It lies approximately south-west of Wołów, and west of the regional capital Wrocław. The village has a population of 2,300. The village is mainly known for its large abbey. The Abbey was built by the Benedictines in 1150, and occupied by Cistercians in 1163 until 1810. Built over centuries, the abbey – the largest Cistercian abbey in the world – is rated in the highest class ("0") of landmarks of world's cultural heritage. Lubiąż is also known in Poland for its regional psychiatric hospital. History The village is located on one of the oldest river crossings in Silesia. This crossing was protected by a castle, which was probably destroyed in 1108, and populated by Poles, who lived in a market named ''Lubies'', which was documented in 1175. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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