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Émile Clapeyron
Benoît Paul Émile Clapeyron (; 26 January 1799 – 28 January 1864) was a French engineer and physicist, one of the founders of thermodynamics. Life Born in Paris, Clapeyron studied at the École polytechnique, graduating in 1818. He also studied at École des mines. In 1820 he and Gabriel Lamé went to Saint Petersburg to teach and work at the school of public works there. He returned to Paris only after the Revolution of July 1830, supervising the construction of the first railway lines connecting Paris to Versailles and Paris to Saint-Germain. The half brothers Stéphane Mony and Eugène Flachat collaborated in this project, which was financed by Adolphe d'Eichthal( fr), Rothschild, Auguste Thurneyssen, Sanson Davillier and the Péreire brothers. Clapeyron took his steam engine designs to England in 1836 to find a manufacturer and engaged Sharp, Roberts and Co. From 1844 to 1859 Clapeyron was a professor at École des Ponts et Chaussées. Clapeyron married Mélanie B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of cities in the European Union by population within city limits, fourth-most populous city in the European Union and the List of cities proper by population density, 30th most densely populated city in the world in 2022. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, culture, Fashion capital, fashion, and gastronomy. Because of its leading role in the French art, arts and Science and technology in France, sciences and its early adoption of extensive street lighting, Paris became known as the City of Light in the 19th century. The City of Paris is the centre of the ÃŽle-de-France region, or Paris Region, with an official estimated population of 12,271,794 inhabitants in January 2023, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gabriel Lamé
Gabriel Lamé (22 July 1795 – 1 May 1870) was a French mathematician who contributed to the theory of partial differential equations by the use of curvilinear coordinates, and the mathematical theory of elasticity (for which linear elasticity and finite strain theory elaborate the mathematical abstractions). Biography Lamé was born in Tours, in today's ''département'' of Indre-et-Loire. He became well known for his general theory of curvilinear coordinates and his notation and study of classes of ellipse-like curves, now known as Lamé curves or superellipses, and defined by the equation: : \left, \,\,\^n + \left, \,\,\^n = 1 where ''n'' is any positive real number. He is also known for his running time analysis of the Euclidean algorithm, marking the beginning of computational complexity theory. In 1844, using Fibonacci numbers, he proved that when finding the greatest common divisor of integers ''a'' and ''b'', the algorithm runs in no more than 5''k'' steps, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
École Des Ponts Et Chaussées
École or Ecole may refer to: * an elementary school in the French educational stages normally followed by secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing in région Île-de-France * École, Savoie, a French commune * École-Valentin, a French commune in the Doubs département * Grandes écoles, higher education establishments in France * The École The École, formerly Ecole Internationale de New York, is an intimate and independent French-American school, which cultivates an internationally minded community of students from 2 to 14 years old in New York City’s vibrant Flatiron Distric ..., a French-American bilingual school in New York City * Ecole Software, a Japanese video-games developer/publisher {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Engine
A steam engine is a heat engine that performs Work (physics), mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a Cylinder (locomotive), cylinder. This pushing force can be transformed by a connecting rod and Crank (mechanism), crank into rotational force for work. The term "steam engine" is most commonly applied to reciprocating engines as just described, although some authorities have also referred to the steam turbine and devices such as Hero's aeolipile as "steam engines". The essential feature of steam engines is that they are external combustion engines, where the working fluid is separated from the combustion products. The ideal thermodynamic cycle used to analyze this process is called the Rankine cycle. In general usage, the term ''steam engine'' can refer to either complete steam plants (including Boiler (power generation), boilers etc.), such as railway steam locomot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Péreire Brothers
Émile Pereire (3 December 1800, Bordeaux - 5 January 1875, Paris) and his brother Isaac Pereire (25 November 1806, Bordeaux – 12 July 1880, Gretz-Armainvilliers) were major figures in the development of France's finance and infrastructure during the Second French Empire. The Pereire brothers challenged the dominance of the Rothschilds in continental European finance, known at the time as ''haute finance''. Their attempt was temporarily successful, and even though it collapsed in the late 1860s, it contributed to a more developed and vibrant economic landscape. Like the Rothschilds, the Pereires were Jews, but unlike them, they were Sephardi of Portuguese origin. Family The brothers' grandfather was Jacob Rodrigues Pereira, one of the inventors of sign language for the deaf, who was born in Spain and established himself in France in 1741, where he became an interpreter for King Louis XV. Jacob Rodrigues Pereire (as he went by in French) married Miriam Lopès Dias, a Sephardic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Mayer De Rothschild
Baron James Mayer de Rothschild (born Jakob Mayer Rothschild; 15 May 1792 – 15 November 1868) was a French banker and the founder of the French branch of the prominent Rothschild family. He was born in the Holy Roman Empire. Early life He was born as Jakob Mayer Rothschild in Frankfurt am Main, then part of the Holy Roman Empire. He was the fifth son and youngest child of Mayer Amschel Rothschild and his wife, Guttle Schnapper. Career In 1812, he moved to Paris to co-ordinate the purchase of specie and bullion for his brother Nathan Mayer Rothschild, and in 1814 and 1815, he was the linchpin in Nathan's plan to provide funds for Wellington's armies. In 1817, he expanded his family's banking empire to Paris, opening De Rothschild Frères. By 1823, the Parisian branch was firmly established as banker to the French government. As an adviser to ministers and kings, he became the most powerful banker in the country. Following the Napoleonic Wars, he played a major role in fina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugène Flachat
Eugène Flachat (16 April 1802 – 16 June 1873 ) was a French civil engineer. Eugène Flachat and his half-brother Stéphane Mony built the railway line from Paris to Saint Germain between 1833 and 1835. They also built the Paris-Versailles Right Bank railway. Eugène Flachat built the first railroad station in Paris. He is remembered today for redesigning the Gare Saint-Lazare railway station in Paris in 1851 and other railroad related projects. He died in Arcachon Arcachon (; ) is a commune in the southwestern French department of Gironde. It is a popular seaside resort on the Atlantic coast southwest of Bordeaux, in the Landes forest. It has a sandy beach and a mild climate said to be favourable for p .... A street in Paris is named for him. His name is one of the 72 names inscribed on the Eiffel Tower. References External links Rue Flachat Paris Engineers from Paris 1802 births 1873 deaths Burials at Montmartre Cemetery French railway civil engineers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stéphane Mony
Stéphane Christophe Mony (or Stéphane Flachat, or Mony-Flachat, 14 February 1800 – 10 March 1884) was a French railway engineer, company president and politician. He was involved in the Saint-Simonian movement when a young man. He was trained as an engineer, and he and his half brother Eugène Flachat built the Paris–Saint-Germain-en-Laye railway, Paris-Saint Germain and Paris-Versailles railway lines between 1833 and 1840. He was then appointed head of the Commentry mining company, later Commentry-Fourchambault, a position he held until his death. He was elected to the legislature towards the end of the Second French Empire, from 1868 to 1870. He did not succeed in getting reelected in the French Third Republic. Family Stéphane Christophe Mony was born in Paris on 14 February 1800. He was the son of Marguerite Charlotte Marthe Mony, who had divorced the Paris notary Pierre Jalabert in November 1799. There was no mention of infidelity in the divorce proceedings, and his mot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris–Saint-Germain-en-Laye Railway
The Paris–Saint-Lazare–Saint-Germain-en-Laye line is a long double-track suburban railway line in France, connecting Gare Saint-Lazare, Paris-Saint-Lazare station (8th arrondissement of Paris) to Saint-Germain-en-Laye station, in the Yvelines department. It is now designated as line no. 975 000 of the Réseau Ferré National (France), national rail network. Inaugurated in 1837 between Paris and Le Pecq, it was the first railway line built from Paris, but also the first in France designed solely for passenger transport and operated using steam locomotives, five years after the opening between 1830 and 1832 of the Saint-Étienne–Lyon railway, built by the brothers Paul and Marc Seguin. Transport on this last line was intended for goods and passengers, and traction was entrusted to Locomotive Seguin, Seguin locomotives with tubular boilers. On the Saint-Étienne–Andrézieux railway, the first line built on the continent and opened in 1827, horse-drawn traction was initially u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Versailles, Yvelines
Versailles ( , ) is a commune in the department of the Yvelines, Île-de-France, known worldwide for the Château de Versailles and the gardens of Versailles, which is designated an UNESCO World Heritage Sites. Located in the western suburbs of the French capital, from the centre of Paris, Versailles is a wealthy suburb of Paris with a service-based economy and is a major tourist destination. According to the 2017 census, the population of the city is 85,862, down from a peak of 94,145 in 1975.Population en historique depuis 1968 , INSEE A founded by order of King |
