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Marcel Deprez
Marcel Deprez (12 December 1843 – 13 October 1918) was a French electrical engineer. He was born in Aillant-sur-Milleron. He died in Vincennes. Biography Deprez was born in Aillant-sur-Milleron in rural France and attended the School of Mines in Paris. He was not able to complete the course; however, he must have made a good impression, as he was employed as a secretary to the Director of the school, Charles Combes.The Engine Indicator , John Walters, Chapter 8, p.8-20 At , from 1876 to 1886, Deprez conducted the first experiments to transmit over long distances. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aillant-sur-Milleron
Aillant-sur-Milleron is a commune in the Loiret department in north-central France. Population See also * Communes of the Loiret department The following is the list of the 325 communes of the Loiret department of France. The communes cooperate in the following intercommunalities (as of 2020):Communes of Loiret {{Loiret-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current
Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify ''current'' or ''voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter. Direct current has many uses, from the charging of batteries to large power sup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1918 Deaths
This year is noted for the end of the World War I, First World War, on the eleventh hour of the eleventh day of the eleventh month, as well as for the Spanish flu pandemic that killed 50–100 million people worldwide. Events Below, the events of World War I have the "WWI" prefix. January * January – 1918 flu pandemic: The "Spanish flu" (influenza) is first observed in Haskell County, Kansas. * January 4 – The Finnish Declaration of Independence is recognized by Russian Soviet Federative Socialist Republic, Soviet Russia, Sweden, German Empire, Germany and France. * January 9 – Battle of Bear Valley: U.S. troops engage Yaqui people, Yaqui Native American warriors in a minor skirmish in Arizona, and one of the last battles of the American Indian Wars between the United States and Native Americans. * January 15 ** The keel of is laid in Britain, the first purpose-designed aircraft carrier to be laid down. ** The Red Army (The Workers and Peasants Red Army) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1843 Births
Events January–March * January ** Serial publication of Charles Dickens's novel ''Martin Chuzzlewit'' begins in London; in the July chapters, he lands his hero in the United States. ** Edgar Allan Poe's short story "The Tell-Tale Heart" is published in a Boston magazine. ** The Quaker magazine '' The Friend'' is first published in London. * January 3 – The ''Illustrated Treatise on the Maritime Kingdoms'' (海國圖志, ''Hǎiguó Túzhì'') compiled by Wei Yuan and others, the first significant Chinese work on the West, is published in China. * January 6 – Antarctic explorer James Clark Ross discovers Snow Hill Island. * January 20 – Honório Hermeto Carneiro Leão, Marquis of Paraná, becomes ''de facto'' first prime minister of the Empire of Brazil. * February – Shaikh Ali bin Khalifa Al-Khalifa captures the fort and town of Riffa after the rival branch of the family fails to gain control of the Riffa Fort and flees to Manama. Shaikh Mohamed bin Ahmed is kille ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Transmission
Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation. The interconnected lines that facilitate this movement form a ''transmission network''. This is distinct from the local wiring between high-voltage substations and customers, which is typically referred to as electric power distribution. The combined transmission and distribution network is part of electricity delivery, known as the electrical grid. Efficient long-distance transmission of electric power requires high voltages. This reduces the losses produced by strong currents. Transmission lines use either alternating current (HVAC) or direct current (HVDC). The voltage level is changed with transformers. The voltage is stepped up for transmission, then reduced for local distribution. A wide area synchronous grid, known as an "interconnection" in North America, directly connects generators delivering AC power with the same rela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oskar Von Miller
Oskar von Miller (7 May 1855 – 9 April 1934) was a German engineer and founder of the Deutsches Museum, a large museum of technology and science in Munich. Biography Born in Munich into an Upper Bavarian family from Aichach, he was the son of the first supervisor of the royal ore foundry in Munich, Ferdinand von Miller (1813–1887) and his wife Anna Pösl (1815–1890). Miller married the painter Marie Seitz in 1884, with whom he had seven children, two of whom died in infancy. His brother was the ore caster and director of the Academy of Fine Arts Munich, Munich Academy of Fine Arts Ferdinand Freiherr von Miller, Baron Ferdinand von Miller. With the elevation of his father Ferdinand into the Bavarian nobility on 12 October 1875 and with the inscription of the family name on the roll of the aristocracy of the Kingdom of Bavaria on 30 December 1875, Oskar was simultaneously ennobled. Miller decided to study technology and civil engineering at the Technical University of Mun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Munich
Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the States of Germany, German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the List of cities in Germany by population, third-largest city in Germany, after Berlin and Hamburg, and thus the largest which does not constitute its own state, as well as the List of cities in the European Union by population within city limits, 11th-largest city in the European Union. The Munich Metropolitan Region, city's metropolitan region is home to 6 million people. Straddling the banks of the River Isar (a tributary of the Danube) north of the Northern Limestone Alps, Bavarian Alps, Munich is the seat of the Bavarian Regierungsbezirk, administrative region of Upper Bavaria, while being the population density, most densely populated municipality in Germany (4,500 people per km2). Munich is the second-largest city in the Bavarian dialects, Bavarian dialect area, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miesbach
Miesbach () is a town in Bavaria, Germany, and is the capital of the Miesbach district. The district is at an altitude of 697 metres above sea level. It covers an area of approximately 863.50 km² of alpine headlands and in 2017 had a population of 11,477. The town is located 48 km southeast of Munich. Lake Schliersee Schliersee is a small town (Markt) and a municipality in the district of Miesbach in Bavaria in Germany. It is named after the nearby Lake Schliersee. It comprises the districts Schliersee (town), , , , Josefsthal and Spitzingsee. Among the p ... and Lake Tegernsee, around which are the internationally renowned spas, Bad Wiessee, Rottach-Egern and Tegernsee, are nearby. Miesbach was founded around the year 1000 and was for hundreds of years the seat of the County of Hohenwaldeck. In the 19th century it became the center of the conservation movement for the traditional costumes, the Tracht. Miesbach also has a rich history as a pilgrimage and a mining ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Exposition Of Electricity, Paris
The first International Exposition of Electricity in Paris ran from August 15, 1881 through to November 15, 1881 at the Palais de l'Industrie on the Champs-Élysées. It served to display the advances in electrical technology since the small electrical display at the Exposition Universelle (1878), 1878 Universal Exposition.K. G. Beauchamp, '' Exhibiting electricity'' IET, 1997 , pp.160-165 Exhibitors came from the United Kingdom, United States, Germany, Italy and the Netherlands, as well as from France. As part of the exhibition, the first International Congress of Electricians presented numerous scientific and technical papers, including definitions of the standard practical units volt, ohm and ampere. History Adolphe Cochery, Minister of Posts and Telegraphs of the time, had initially suggested that an international exposition should be held. This show was a great stir. The public could admire the dynamo of Zénobe Gramme, the incandescent light, the Théâtrophone, the elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vincennes
Vincennes (, ) is a commune in the Val-de-Marne department in the eastern suburbs of Paris, France. It is located from the centre of Paris. It is next to but does not include the Château de Vincennes and Bois de Vincennes, which are attached to the city of Paris. History The Marquis de Sade was imprisoned in Vincennes fortress in 1777, where he remained until February 1784 although he escaped for a little over a month in 1778. Thereafter Vincennes fortress was closed and de Sade transferred to the Bastille. In 1821, the noted French poet, Alfred de Vigny, wrote his poem, "La Prison," which details the last days of the Man in the Iron Mask at Vincennes. The ministers of Charles X were imprisoned at the fortress of Vincennes after the July Revolution. A test was conducted in 1849 on Claude-Étienne Minié's invention the Minié ball which would prove successful and years later be adopted by the French army. On the morning of 15 October 1917, famous femme fatale Mata Hari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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