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Robert Brothers
Les Frères Robert were two French brothers. Anne-Jean Robert (1758–1820) and Nicolas-Louis Robert (1760–1828) were the engineers who built the world's first hydrogen balloon for professor Jacques Charles, which flew from central Paris on 27 August 1783. They went on to build the world's first manned hydrogen balloon, and on 1 December 1783 Nicolas-Louis accompanied Jacques Charles on a 2-hour, 5-minute flight. Their barometer and thermometer made it the first balloon flight to provide meteorological measurements of the atmosphere above the Earth's surface. The brothers subsequently experimented with an elongated elliptical shape for the hydrogen envelope in a balloon they attempted to power and steer by means of oars and umbrellas. In September 1784 the brothers flew 186 km from Paris to Beuvry, the world's first flight of more than 100 km. Career Background The Robert brothers were skilled engineers with a workshop at the ''Place des Victoires'' in Paris, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is an affinity group for contributors with shared goals within the Wikimedia movement. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sibling projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by ''Smithsonian Magazine, Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Balloon
A gas balloon is a balloon that rises and floats in the air because it is filled with a gas lighter than air (such as helium or hydrogen). When not in flight, it is tethered to prevent it from flying away and is sealed at the bottom to prevent the escape of gas. A gas balloon may also be called a '' Charlière'' for its inventor, the Frenchman Jacques Charles. Today, familiar gas balloons include large blimps and small latex party balloons. For nearly 200 years, well into the 20th century, manned balloon flight utilized gas balloons before hot-air balloons became dominant. Without power, heat or fuel, untethered flights of gas balloons depended on the skill of the pilot. Gas balloons have greater lift for a given volume, so they do not need to be so large, and they can stay up for much longer than hot air balloons. History The first gas balloon made its flight in August 1783. Designed by professor Jacques Charles and Les Frères Robert, it carried no passengers or cargo. On ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nesles-la-Vallée
Nesles-la-Vallée () is a commune in the Val-d'Oise department in Île-de-France in northern France. See also *Communes of the Val-d'Oise department The following is a list of the 183 Communes of France, communes of the Val-d'Oise Departments of France, department of France. The communes cooperate in the following Communes of France#Intercommunality, intercommunalities (as of 2025): References External links *Association of Mayors of the Val d'Oise Communes of Val-d'Oise {{ValOise-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Joseph D'Albert D'Ailly
Louis Joseph d'Albert, 6th Duke of Chaulnes (1741–1792), sixth Duke of Chaulnes and son of Michel Ferdinand d'Albert d'Ailly, was a chemist and French aristocrat. Biography At the death of his father in 1769, Louis Joseph inherited the title of Duke of Picquigny. He studied science successfully and in 1764 was elected a Fellow of the Royal Society in London. He retired from military service at the age of twenty-four with the simple rank of colonel and instead undertook the study of natural sciences. In 1775, he proved that the poisonous air produced in the brewing process was carbon dioxide, and demonstrated a method of easily preparing acidic water with instruments with which water was shaken above vats where beer was fermenting. He showed a method of extracting and purifying salts from urine. In 1773, he found a way to crystallize alkalis by saturating carbon dioxide over a vat of beer. Chemists at the time recognised that asphyxiation from coal fumes is due to the for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Antoine De Gontaut
Louis Antoine de Gontaut, 6th Duke of Biron (1700–1788) was Duke of Biron and a French military leader who served with distinction under Louis XV, and was made a Marshal of France in 1757. He was the fourth son of Charles-Armand de Gontaut, duc Biron, and Marie Antoinette, Duchess of Lauzun. He joined the army as an adolescent. He fought in Italy (attack on the Milan castle, Tortona and the Battle of San Pietro). In the War of the Austrian Succession, he participated in 1741 in the invasion of Moravia and the Siege of Prague, where he was badly wounded. In 1745, during the Battle of Fontenoy, he became a hero, when he took over the command of a regiment of Gardes Françaises after its commander had been killed, and saved the difficult situation the regiment was in. He became Marshal of France at the beginning of the Seven Years' War. Biron was very popular amongst his soldiers. It is said that some of his men risked their lives to save his, when in 1770 Biron was caught in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Antoine Sophie De Vignerot Du Plessis
Louis Antoine Sophie de Vignerot du Plessis, 4th Duke of Richelieu (4 February 1736 – 1791), was a French nobleman and general. He was known by the courtesy title of Duke of Fronsac before 1788. He also held the titles of Prince de Mortagne, Marquis du Pont-Courlay, Count of Cosnac, Baron de Barbezieux, Baron de Coze and Baron of Saugeon. Life and career He was the son of Louis François Armand de Vignerot du Plessis (1696–1788), 3rd Duke of Richelieu, Marshal of France and an expert courtier, and of Marie Élisabeth Sophie de Lorraine (daughter of Anne Marie Joseph de Lorraine. Madame de Pompadour wished Antoine to marry her daughter, but his father avoided that demand by pretending that Antoine's mother was a Princess of Lorraine (much superior to the house of Richelieu) and that he would thus need the permission of the head of that house ( Emperor Francis I) for the marriage. Madame de Pompadour did not press her claims any further. A first cousin was Marie Charlott ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuileries Palace
The Tuileries Palace (, ) was a palace in Paris which stood on the right bank of the Seine, directly in the west-front of the Louvre Palace. It was the Parisian residence of most French monarchs, from Henri IV to Napoleon III, until it was burned by the Paris Commune in 1871 and demolished in 1883. Construction began in 1564, originally to serve as a home for Queen Catherine de' Medici, and was gradually extended until it closed off the western end of the courtyard and displayed an immense façade of 266 metres. Since the destruction of the Tuileries, the courtyard has remained open to the west, and the site now overlooks the eastern end of the Tuileries Garden, forming an elevated terrace between the Place du Carrousel and the gardens proper. History Plan of Catherine de' Medici (16th century) The site of the Tuileries Palace was originally just outside the walls of the city, in an area frequently flooded by the Seine as far as the present Rue Saint-Honoré. The land w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Premier Aérostat à Vx021g18h 0 Z603qz54h
Premier is a title for the head of government in central governments, state governments and local governments of some countries. A second in command to a premier is designated as a deputy premier. A premier will normally be a head of government, but is not the head of state. In presidential systems, the two roles are often combined into one, whereas in parliamentary systems of government the two are usually kept separate. Relationship to the term "prime minister" "Premier" is often the title of the heads of government in sub-national entities, such as the provinces and territories of Canada, states of the Commonwealth of Australia, provinces of South Africa, the island of Nevis within the Federation of Saint Kitts and Nevis. In some of these cases, the formal title remains "Prime Minister" but "Premier" is used to avoid confusion with the national leader. In these cases, care should be taken not to confuse the title of "premier" with "prime minister". In these countries, ter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacques Charles Luftschiff
Jacques or Jacq are believed to originate from the Middle Ages in the historic northwest Brittany region in France, and have since spread around the world over the centuries. To date, there are over one hundred identified noble families related to the surname by the Nobility & Gentry of Great Britain & Ireland. Origins The origin of this surname comes from the Latin ' Iacobus', associated with the biblical patriarch Jacob. Ancient history A French knight returning from the Crusades in the Holy Lands probably adopted the surname from "Saint Jacques" (or "James the Greater"). James the Greater was one of Jesus' Twelve Apostles, and is believed to be the first martyred apostle. Being endowed with this surname was an honor at the time and it is likely that the Church allowed it because of acts during the Crusades. Indeed, at this time, the use of biblical, Christian, or Hebrew names and surnames became very popular, and entered the European lexicon. Robert J., a Knight Crusader ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barthélemy Faujas De Saint-Fond
Barthélemy Faujas de Saint-Fond (17 May 174118 July 1819) was a French geologist, volcanologist and traveller. Life He was born at Montélimar. He was educated at the Jesuit's College at Lyon and afterwards at Grenoble where he studied law and was admitted as an advocate to the parlement. He rose to be president of the seneschal's court in Montélimar (1765), where he acquitted himself with distinction. However, he became disenchanted with law and wished to pursue his love of nature that had begun earlier in his life. His favourite pastime was visiting the mountain regions in the Alps and Massif Central. There he began to study the forms, structure, composition and superposition of rocks. In 1775 in the Velay, he discovered a rich deposit of pozzuolana, that was eventually mined by the government. In 1776, he established a relationship with Buffon, who recognised the value of his scientific efforts immediately. Invited by Buffon to Paris, Faujas ceased his legal work and wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gonesse
Gonesse () is a commune in the Val-d'Oise department, in the north-eastern suburbs of Paris, France. It is located from the centre of Paris. The commune lies approximately eight kilometres (five miles) north of Le Bourget Airport, and it is six kilometres (four miles) south-west of Charles de Gaulle International Airport. History Since Carolingian times, cereals have been grown in Gonesse. In the period of the 12th through to the 16th centuries, the cultivation of grain was supplemented by drapery, in particular the production of the coarse woollen material of the ''gaunace''.Histoire de Gonesse – Quelques repères historiques . ''Ville-gonesse.fr''. Retrieved 11 July 2011. The commune was an impo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead () is a chemical element; it has Chemical symbol, symbol Pb (from Latin ) and atomic number 82. It is a Heavy metal (elements), heavy metal that is density, denser than most common materials. Lead is Mohs scale, soft and Ductility, malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable nuclide, stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its Amphoterism, amphoteric nature; lead and lead oxides react with acids and base (chemistry), bases, and it tends to form covalent bonds. Lead compounds, Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
