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Florence Rivault
Florence Rivault (or David Rivault de Flurence) (1571–1616) was a French people, French mathematician and royal servant. He was born probably at La Cropte, near Laval, Mayenne, France. He was a "Gentleman of the Bedchamber#France, Gentleman of the Bedchamber" to Henry IV of France, Henry IV, and a teacher of Louis XIII. He discovered that water, if confined in a bombshell and heated, would explode the shell. He published that fact in his treatise on artillery in 1605, where he wrote: "The water is converted into air, and its vaporization is followed by violent explosion." His discovery is seen as one of the steps leading to the invention of the steam engine. He died in Tours, France in January 1616. Works * ''L'effet de la raréfaction de l'eau ad e quoi épouvanter les plut assurés des homme''n ''Elément d'artilierie'', p. 117-118. Paris, 1605 See also * History of the steam engine References * Robert Henry Thurston, ''A history of the growth of the steam-engine'', D. Ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French People
The French people (french: Français) are an ethnic group and nation primarily located in Western Europe that share a common French culture, history, and language, identified with the country of France. The French people, especially the native speakers of langues d'oïl from northern and central France, are primarily the descendants of Gauls (including the Belgae) and Romans (or Gallo-Romans, western European Celtic and Italic peoples), as well as Germanic peoples such as the Franks, the Visigoths, the Suebi and the Burgundians who settled in Gaul from east of the Rhine after the fall of the Roman Empire, as well as various later waves of lower-level irregular migration that have continued to the present day. The Norse also settled in Normandy in the 10th century and contributed significantly to the ancestry of the Normans. Furthermore, regional ethnic minorities also exist within France that have distinct lineages, languages and cultures such as Bretons in Brittany, Occi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman mathematician recorded by history was Hypati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Cropte
La Cropte is a commune in the Mayenne department in north-western France. Geography The Vaige forms most of the commune's north-western border, then flows southeastwards through the middle of the commune. See also *Communes of the Mayenne department The following is a list of the 240 communes of the Mayenne department of France. The communes cooperate in the following intercommunalities (as of 2020):Cropte {{Mayenne-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laval, Mayenne
Laval () is a town in western France, about west-southwest of Paris, and the capital of the Mayenne department. Its inhabitants are called ''Lavallois''. The commune of Laval proper, without the metropolitan area, is the 7th most populous in the Pays de la Loire region and the 132nd in France.Téléchargement du fichier d'ensemble des populations légales en 2017 INSEE A part of the traditional of |
Gentleman Of The Bedchamber
Gentleman of the Bedchamber was a title in the royal household of the Kingdom of England from the 11th century, later used also in the Kingdom of Great Britain. A Lord of the Bedchamber was a courtier in the Royal Household; the term being first used in 1718. The duties of the Lords and Gentleman of the Bedchamber originally consisted of assisting the monarch with dressing, waiting on him when he ate, guarding access to his bedchamber and closet and providing companionship. Such functions became less important over time, but provided proximity to the monarch; the holders were thus trusted confidants and often extremely powerful. The offices were in the gift of The Crown and were originally sworn by Royal Warrant directed to the Lord Chamberlain. This is an ''incomplete'' list of noblemen who have served as Lord of the Bedchamber or Gentleman of the Bedchamber: Description and functions There were always several holders of the office, who were invariably gentlemen and almost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry IV Of France
Henry IV (french: Henri IV; 13 December 1553 – 14 May 1610), also known by the epithets Good King Henry or Henry the Great, was King of Navarre (as Henry III) from 1572 and King of France from 1589 to 1610. He was the first monarch of France from the House of Bourbon, a cadet branch of the Capetian dynasty. He was assassinated in 1610 by François Ravaillac, a Catholic zealot, and was succeeded by his son Louis XIII. Henry was the son of Jeanne III of Navarre and Antoine de Bourbon, Duke of Vendôme. He was baptised as a Catholic but raised in the Protestant faith by his mother. He inherited the throne of Navarre in 1572 on his mother's death. As a Huguenot, Henry was involved in the French Wars of Religion, barely escaping assassination in the St. Bartholomew's Day massacre. He later led Protestant forces against the French royal army. Henry became king of France in 1589 upon the death of Henry III, his brother-in-law and distant cousin. He was the first Fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis XIII
Louis XIII (; sometimes called the Just; 27 September 1601 – 14 May 1643) was King of France from 1610 until his death in 1643 and King of Navarre (as Louis II) from 1610 to 1620, when the crown of Navarre was merged with the French crown. Shortly before his ninth birthday, Louis became king of France and Navarre after his father Henry IV was assassinated. His mother, Marie de' Medici, acted as regent during his minority. Mismanagement of the kingdom and ceaseless political intrigues by Marie and her Italian favourites led the young king to take power in 1617 by exiling his mother and executing her followers, including Concino Concini, the most influential Italian at the French court. Louis XIII, taciturn and suspicious, relied heavily on his chief ministers, first Charles d'Albert, duc de Luynes and then Cardinal Richelieu, to govern the Kingdom of France. The King and the Cardinal are remembered for establishing the ''Académie française'', and ending the revolt of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bomb
A bomb is an explosive weapon that uses the Exothermic process, exothermic reaction of an explosive material to provide an extremely sudden and violent release of energy. Detonations inflict damage principally through ground- and atmosphere-transmitted mechanical stress (mechanics), stress, the impact and penetration of pressure-driven projectiles, pressure damage, and explosion-generated effects. Bombs have been utilized since the 11th century starting in East Asia. The term bomb is not usually applied to explosive devices used for civilian purposes such as construction or mining, although the people using the devices may sometimes refer to them as a "bomb". The military use of the term "bomb", or more specifically aerial bomb action, typically refers to airdropped, unpowered explosive weapons most commonly used by air forces and naval aviation. Other military explosive weapons not classified as "bombs" include shell (projectile), shells, depth charges (used in water), or lan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artillery
Artillery is a class of heavy military ranged weapons that launch munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during sieges, and led to heavy, fairly immobile siege engines. As technology improved, lighter, more mobile field artillery cannons developed for battlefield use. This development continues today; modern self-propelled artillery vehicles are highly mobile weapons of great versatility generally providing the largest share of an army's total firepower. Originally, the word "artillery" referred to any group of soldiers primarily armed with some form of manufactured weapon or armor. Since the introduction of gunpowder and cannon, "artillery" has largely meant cannons, and in contemporary usage, usually refers to shell-firing guns, howitzers, and mortars (collectively called ''barrel artillery'', ''cannon artillery'', ''gun artillery'', or - a layman t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Engine
A steam engine is a heat engine that performs 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. This pushing force can be transformed, by a connecting rod and crank, into rotational force for work. The term "steam engine" is generally applied only to reciprocating engines as just described, not to the steam turbine. Steam engines 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 boilers etc.), such as railway steam locomotives and portable engines, or may refer to the piston or turbine machinery alone, as in the beam engine and stationary steam engine. Although steam-driven devices were known as early as the aeolipile in the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tours, France
Tours ( , ) is one of the largest cities in the region of Centre-Val de Loire, France. It is the prefecture of the department of Indre-et-Loire. The commune of Tours had 136,463 inhabitants as of 2018 while the population of the whole metropolitan area was 516,973. Tours sits on the lower reaches of the Loire, between Orléans and the Atlantic coast. Formerly named Caesarodunum by its founder, Roman Emperor Augustus, it possesses one of the largest amphitheaters of the Roman Empire, the Tours Amphitheatre. Known for the Battle of Tours in 732 AD, it is a National Sanctuary with connections to the Merovingians and the Carolingians, with the Capetians making the kingdom's currency the Livre tournois. Saint Martin, Gregory of Tours and Alcuin were all from Tours. Tours was once part of Touraine, a former province of France. Tours was the first city of the silk industry. It was wanted by Louis XI, royal capital under the Valois Kings with its Loire castles and city of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of The Steam Engine
The first recorded rudimentary steam engine was the aeolipile mentioned by Vitruvius between 30 and 15 BC and, described by Heron of Alexandria in 1st-century Roman Egypt. Several steam-powered devices were later experimented with or proposed, such as Taqi al-Din's steam jack, a steam turbine in 16th-century Ottoman Egypt, and Thomas Savery's steam pump in 17th-century England. In 1712, Thomas Newcomen's atmospheric engine became the first commercially successful engine using the principle of the piston and cylinder, which was the fundamental type of steam engine used until the early 20th century. The steam engine was used to pump water out of coal mines. During the Industrial Revolution, steam engines started to replace water and wind power, and eventually became the dominant source of power in the late 19th century and remaining so into the early decades of the 20th century, when the more efficient steam turbine and the internal combustion engine resulted in the rapid repla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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