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Séré De Rivières System
The system was an ensemble of fortifications built from 1874 along the frontiers, ridges and coasts of France. The fortifications were named after their architect, Brigadier-General Raymond Adolphe Séré de Rivières. The fortresses were obsolescent by 1914 but were used during the First World War. Background Following the Franco-Prussian War of 1870–1871, France found itself seriously weakened and isolated from the rest of Europe, menaced by Germany and stung by the loss of Alsace-Lorraine. At the same time as the departure of the last German troops, France created the Defence Committee (), which was active between 1872 and 1888, whose mission was to reorganize the defence of the French frontiers and coasts. It was necessary to compensate for the lost territories of the north-east; to modernise old fortifications, which had been shown to be wanting in the last war and to create new fortifications proof against modern weaponry using new and more powerful explosives. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Douaumont
Fort Douaumont (, ) was the largest and highest Fortification, fort on the ring of 19 large defensive works which had protected the city of Verdun, France, since the 1890s. By 1915, the French General Staff had concluded that even the best-protected forts of Verdun could not withstand bombardments from the German 42 cm Gamma Mörser, 420 mm (16.5 in) Gamma guns. These new super-heavy howitzers had easily taken several large Belgian forts out of action in August 1914. Fort Douaumont and other Verdun forts were judged ineffective and had been partly disarmed and left virtually undefended since 1915. On 25 February 1916, Fort Douaumont was entered and occupied without a fight by a small German raiding party comprising only 19 officers and 79 men, entering via an open window by the moat. The easy fall of Fort Douaumont, only three days after the beginning of the Battle of Verdun, shocked the French Army in World War I, French Army. It set the stage for the rest of a battle which l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verdun
Verdun ( , ; ; ; official name before 1970: Verdun-sur-Meuse) is a city in the Meuse (department), Meuse departments of France, department in Grand Est, northeastern France. It is an arrondissement of the department. In 843, the Treaty of Verdun, which divided the Carolingian Empire into three kingdoms—considered the foundation of Germany and France—was signed there. An episcopal principality of the Holy Roman Empire since the 10th century, Verdun was subjugated by France in 1552, during the "Voyage to Austrasia". Along with the other free cities of the Empire, Metz and Toul, it formed the province of the Three Bishoprics, which was attached to the Kingdom of France in 1648 by the Treaty of Münster (1648), Treaty of Münster. Verdun is the biggest city in Meuse, although the capital of the department is Bar-le-Duc, which is slightly smaller than Verdun. It is well known for giving Battle of Verdun, its name to the longest battle in modern history in the World War I, Fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinforced Concrete
Reinforced concrete, also called ferroconcrete or ferro-concrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel reinforcing bars (known as rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion. Description Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and/or structural failure. Modern reinforced concrete can contain varied reinforcing materials made o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concrete
Concrete is a composite material composed of aggregate bound together with a fluid cement that cures to a solid over time. It is the second-most-used substance (after water), the most–widely used building material, and the most-manufactured material in the world. When aggregate is mixed with dry Portland cement and water, the mixture forms a fluid slurry that can be poured and molded into shape. The cement reacts with the water through a process called hydration, which hardens it after several hours to form a solid matrix that binds the materials together into a durable stone-like material with various uses. This time allows concrete to not only be cast in forms, but also to have a variety of tooled processes performed. The hydration process is exothermic, which means that ambient temperature plays a significant role in how long it takes concrete to set. Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laon
Laon () is a city in the Aisne Departments of France, department in Hauts-de-France in northern France. History Early history The Ancient Diocese of Laon, which rises a hundred metres above the otherwise flat Picardy plain, has always held strategic importance. In the time of Julius Caesar there was a Gallic village named Bibrax where the Remis (inhabitants of the country round Rheims, Reims) had to meet the onset of the confederated Belgae. Whatever may have been the precise locality of that battlefield, Laon was fortified by the Romans, and successively checked the invasions of the Franks, Burgundians, Vandals, Alans and Huns. At that time it was known as ''Alaudanum'' or ''Lugdunum Clavatum''. Archbishop Saint Remigius, Remigius of Archbishopric of Reims, Reims, who baptised Clovis I, Clovis, was born in the Laonnais, and it was he who, at the end of the fifth century, instituted the Ancient Diocese of Laon, bishopric of Laon. Thenceforward Laon was one of the principal to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picric Acid
Picric acid is an organic compound with the formula (O2N)3C6H2OH. Its IUPAC name is 2,4,6-trinitrophenol (TNP). The name "picric" comes from (''pikros''), meaning "bitter", due to its bitter taste. It is one of the most acidic phenols. Like other strongly nitrated organic compounds, picric acid is an explosive, which is its primary use. It has also been used as medicine (antiseptic, burn treatments) and as a dye. History Picric acid was probably first mentioned in the 17th-century alchemical writings of Johann Rudolf Glauber. Initially, it was made by nitrating substances such as animal horn, silk, indigo, and natural resin, the synthesis from indigo first being performed by Peter Woulfe in 1771. The German chemist Justus von Liebig had named picric acid (rendered in French as ). Picric acid was given that name by the French chemist Jean-Baptiste Dumas in 1841. Its synthesis from phenol, and the correct determination of its formula, were accomplished during 1841. In 1799 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fond De Carte 1914 (b)
In the culinary arts, fond is a contraction of ''fonds de cuisine'' which is loosely described as "the foundation and working capital of the kitchen". In its native usage, fond refers to the sauce created by dissolving the flavorful solid bits of food ('' sucs'') stuck to a pan or pot after cooking. In English speaking countries, it often refers to the bits themselves. These bits are deglazed with a liquid in order to produce a stock, broth, or sauce In cooking, a sauce is a liquid, cream, or semi- solid food, served on or used in preparing other foods. Most sauces are not normally consumed by themselves; they add flavour, texture, and visual appeal to a dish. ''Sauce'' is a French wor .... The name is an abbreviated form of the French word ''fondation'' (foundation in English). References Sauces Cooking techniques Culinary terminology {{food-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bourlémont
Bourlémont is a hill located in Ronchamp, Haute-Saône, eastern France with an elevation of above sea level. It is located in the Ballons des Vosges Nature Park, and is an area of cultural tourism, given that the chapel of Notre Dame du Haut is located on it. Toponymy In the 18th century, Bourlémont was described as "Notre-Dame-de-Bourg-les-monts", which indicates that there was a fortified town on the hill. At the beginning of the nineteenth century, the hill was called the "Bourg Mountain". Geography Bourlémont is located in Ronchamp, Haute-Saône, Franche-Comté, France. It can be accessed from Chapel Street on the southeastern side of the summit and the Stations of the Cross, Way of the Cross footpath which was created in 1890. The GR 59 and Dukes hiking trails pass along the eastern side of the hill. The hill has an altitude of , meaning that it is higher than the centre of Ronchamp (), which is at the foot of the hill. Bourlémont is mainly composed of red sandstone, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meurthe-et-Moselle
Meurthe-et-Moselle () is a '' département'' in the Grand Est region of France, named after the rivers Meurthe and Moselle. Its prefecture and largest city is Nancy and it borders the departments of Meuse to the west, Vosges to the south, Moselle and Bas-Rhin and it borders the Belgian province of Luxembourg and the country of Luxembourg by the canton of Esch-sur-Alzette to the north. It had a population of 733,760 in 2019.Populations légales 2019: 54 Meurthe-et-Moselle INSEE History Meurthe-et-Moselle was created in 1871 at the end of the from the parts of the former departments of[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manonviller
Manonviller () is a commune in the Meurthe-et-Moselle department in north-eastern France. See also *Communes of the Meurthe-et-Moselle department The following is a list of the 591 communes of the Meurthe-et-Moselle department of France. The communes cooperate in the following intercommunalities (as of 2025): References Communes of Meurthe-et-Moselle {{Lunéville-geo-stub ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brest, France
Brest (; ) is a port, port city in the Finistère department, Brittany (administrative region), Brittany. Located in a sheltered bay not far from the western tip of a peninsula and the western extremity of metropolitan France, Brest is an important harbour and the second largest French military port after Toulon. The city is located on the western edge of continental France. With 139,456 inhabitants (2020), Brest forms Lower Brittany, Western Brittany's largest functional area (France), metropolitan area (with a population of 370,000 in total), ranking third behind only Nantes and Rennes in the whole of historic Brittany, and the List of communes in France with over 20,000 inhabitants, 25th most populous city in France (2019); moreover, Brest provides services to the one million inhabitants of Western Brittany. Although Brest is by far the largest city in Finistère, the ''Prefectures in France, préfecture'' (administrative seat) of the department is in the much smaller town of ... [...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 Île-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] |
