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Georges Leclanché
Georges Leclanché (October 9, 1839 – September 14, 1882) was a French electrical engineer chiefly remembered for his invention of the Leclanché cell, one of the first modern electrical batteries and the forerunner of the modern dry cell battery. Biography Leclanché was born in 1839 in Parmain (Seine-et-Oise), France, the son of Léopold Leclanché and Eugenie of Villeneuve. Due to the political situation in France, and because his father was a former minister, his parents, also friends of the writer Victor Hugo, decided to take the way of exile in the United Kingdom. He was thus educated in England but completed his education at École Centrale des Arts et Manufactures (École Centrale Paris), one of the top engineering schools in France, graduating in 1860 to begin work as an engineer. He first worked for a French railways company where he was in charge of communication infrastructures related to the electrical transmission of time. His interest for the development of efficie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leclanché
Leclanché is a Swiss Lithium-ion cells and energy storage solutions company founded in 1909. Through a licensed ceramic separator technology and focus on lithium–titanate technology, Leclanché manufactures large-format lithium-ion cells. At the end of the second quarter 2012, Leclanché started operations of its first production line with an installed annual capacity of up to 76 MWh in lithium titanate cells. Leclanché was founded in 1909 in Yverdon-les-Bains in the Swiss canton of Vaud. The company is named after the Leclanché cell invented and patented by the French scientist Georges Leclanché in 1866. Through the integration of a spin-off from the German research organization Fraunhofer-Gesellschaft in 2006, the company pivoted from a traditional battery manufacturer to become a developer and manufacturer of lithium-ion cells. Leclanché employs 120 staff and is listed on the SIX Swiss Exchange (LECN). The company has its headquarters in Yverdon-les-Bains, Switzerland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People From Val-d'Oise
A person ( : people) is a being that has certain capacities or attributes such as reason, morality, consciousness or self-consciousness, and being a part of a culturally established form of social relations such as kinship, ownership of property, or legal responsibility. The defining features of personhood and, consequently, what makes a person count as a person, differ widely among cultures and contexts. In addition to the question of personhood, of what makes a being count as a person to begin with, there are further questions about personal identity and self: both about what makes any particular person that particular person instead of another, and about what makes a person at one time the same person as they were or will be at another time despite any intervening changes. The plural form "people" is often used to refer to an entire nation or ethnic group (as in "a people"), and this was the original meaning of the word; it subsequently acquired its use as a plural form of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1882 Deaths
Year 188 (CLXXXVIII) was a leap year starting on Monday of the Julian calendar. At the time, it was known in the Roman Empire as the Year of the Consulship of Fuscianus and Silanus (or, less frequently, year 941 ''Ab urbe condita''). The denomination 188 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Publius Helvius Pertinax becomes pro-consul of Africa from 188 to 189. Japan * Queen Himiko (or Shingi Waō) begins her reign in Japan (until 248). Births * April 4 – Caracalla (or Antoninus), Roman emperor (d. 217) * Lu Ji (or Gongji), Chinese official and politician (d. 219) * Sun Shao, Chinese general of the Eastern Wu state (d. 241) Deaths * March 17 – Julian, pope and patriarch of Alexandria * Fa Zhen (or Gaoqing), Chinese scholar (b. AD 100) * Lucius Antistius Burrus, Roman politician (executed) * Ma Xiang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1839 Births
Events January–March * January 2 – The first photograph of the Moon is taken, by French photographer Louis Daguerre. * January 6 – Night of the Big Wind: Ireland is struck by the most damaging cyclone in 300 years. * January 9 – The French Academy of Sciences announces the daguerreotype photography process. * January 19 – British forces capture Aden. * January 20 – Battle of Yungay: Chile defeats the Peru–Bolivian Confederation, leading to the restoration of an independent Peru. * January – The first parallax measurement of the distance to Alpha Centauri is published by Thomas Henderson. * February 11 – The University of Missouri is established, becoming the first public university west of the Mississippi River. * February 24 – William Otis receives a patent for the steam shovel. * March 5 – Longwood University is founded in Farmville, Virginia. * March 7 – Baltimore City College, the third public high school in the United States, is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plaster
Plaster is a building material used for the protective or decorative coating of walls and ceilings and for Molding (decorative), moulding and casting decorative elements. In English, "plaster" usually means a material used for the interiors of buildings, while "render" commonly refers to external applications. Another imprecise term used for the material is stucco, which is also often used for plasterwork that is worked in some way to produce relief decoration, rather than flat surfaces. The most common types of plaster mainly contain either gypsum, lime plaster, lime, or cement plaster, cement,Franz Wirsching "Calcium Sulfate" in Ullmann's Encyclopedia of Industrial Chemistry, 2012 Wiley-VCH, Weinheim. but all work in a similar way. The plaster is manufactured as a dry powder and is mixed with water to form a stiff but workable paste immediately before it is applied to the surface. The reaction with water liberates heat through crystallization and the hydrated plaster then ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Gassner
Carl Gassner is a German physician (17 November 1855 in Mainz; † 31 January 1942), scientist and inventor, better known to have contributed to improve the Leclanché cell and to have fostered the development of the first dry cell, also known as the zinc–carbon battery, less likely to break or leak and that could be effectively industrially produced at large scale. Life Gassner studied the medicine at the University of Strasbourg and then practiced in Mainz (Germany) as a specialist in diseases of the eyes and ears. He also conducted experiments in physics and chemistry at the Balbach watchmaking industry. Invention of dry cell In 1880, most of the door bells operated with a wet Leclanché cell containing an aqueous electrolyte solution which often dried out, rendering the cell unusable. To remediate this inconvenience, in 1876, Georges Leclanché started to jellify the electrolyte of his cell by adding starch to the ammonium chloride, making also his cell more portable. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaline Cell
An alkaline battery (IEC code: L) is a type of primary battery where the electrolyte (most commonly potassium hydroxide) has a pH value above 7. Typically these batteries derive energy from the reaction between zinc metal and manganese dioxide, nickel and cadmium, or nickel and hydrogen. Compared with zinc–carbon batteries of the Leclanché cell or zinc chloride types, alkaline batteries have a higher energy density and longer shelf life, yet provide the same voltage. The alkaline battery gets its name because it has an alkaline electrolyte of potassium hydroxide (KOH) instead of the acidic ammonium chloride (NH4Cl) or zinc chloride (ZnCl2) electrolyte of the zinc–carbon batteries. Other battery systems also use alkaline electrolytes, but they use different active materials for the electrodes. Alkaline batteries account for 80% of manufactured batteries in the US and over 10 billion individual units produced worldwide. In Japan, alkaline batteries account for 46% of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris
Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, fashion, gastronomy, and science. For its leading role in the arts and sciences, as well as its very early system of street lighting, in the 19th century it became known as "the City of Light". Like London, prior to the Second World War, it was also sometimes called the capital of the world. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an estimated population of 12,262,544 in 2019, or about 19% of the population of France, making the region France's primate city. The Paris Region had a GDP of €739 billion ($743 billion) in 2019, which is the highest in Europe. According to the Economist Intelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rue Georges Leclanché
''Ruta graveolens'', commonly known as rue, common rue or herb-of-grace, is a species of '' Ruta'' grown as an ornamental plant and herb. It is native to the Balkan Peninsula. It is grown throughout the world in gardens, especially for its bluish leaves, and sometimes for its tolerance of hot and dry soil conditions. It is also cultivated as a culinary herb, and to a lesser extent as an insect repellent and incense. Etymology The specific epithet ''graveolens'' refers to the strong-smelling leaves.J. D. Douglas and Merrill C. Tenney Description Rue is a woody, perennial shrub. Its leaves are oblong, blue green and arranged pinnate; they release a strong aroma when they are bruised. The flowers are small with 4 to 5 dull yellow petals in clusters. They bear brown seed capsules when pollinated. Uses Traditional use In the ancient Roman world, the naturalists Pedanius Dioscorides and Pliny the Elder recommended that rue be combined with the poisonous shrub oleander t ... [...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] |
Baden-Württemberg
Baden-Württemberg (; ), commonly shortened to BW or BaWü, is a German state () in Southwest Germany, east of the Rhine, which forms the southern part of Germany's western border with France. With more than 11.07 million inhabitants across a total area of nearly , it is the third-largest German state by both area (behind Bavaria and Lower Saxony) and population (behind North Rhine-Westphalia and Bavaria). As a federated state, Baden-Württemberg is a partly-sovereign parliamentary republic. The largest city in Baden-Württemberg is the state capital of Stuttgart, followed by Mannheim and Karlsruhe. Other major cities are Freiburg im Breisgau, Heidelberg, Heilbronn, Pforzheim, Reutlingen, Tübingen, and Ulm. What is now Baden-Württemberg was formerly the historical territories of Baden, Prussian Hohenzollern, and Württemberg. Baden-Württemberg became a state of West Germany in April 1952 by the merger of Württemberg-Baden, South Baden, and Württemberg-Hohenzollern. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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