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Aqueduct Of The Gier
The Aqueduct of the Gier (French ''Aqueduc du Gier'') is an ancient Roman aqueduct probably constructed in the 1st century AD to provide water for Lugdunum (Lyon), in what is now eastern France. It is the longest and best preserved of four Roman aqueducts that served the growing capital of the Roman province of Gallia Lugdunensis. It drew its water from the source of the Gier, a small tributary of the Rhone, on the slopes of Mont Pilat, south-west of Lyon. Following a sinuous path, at the aqueduct of the Gier is the longest known of the Roman aqueducts. Its route has been retraced in detail, following the numerous remains. Leaving the uplands of the Massif du Pilat, department of the Loire, the aqueduct hugs the surface relief and crosses the department of the Rhone, passing through Mornant, Orliénas, Chaponost and Sainte-Foy-lès-Lyon to terminate at Lyon. In its extent, it draws upon the whole repertory of Roman techniques of aqueduct building, taking a slope that aver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aqueduct Of The Gier, France - 50154791071
Aqueduct may refer to: Structures *Aqueduct (bridge), a bridge to convey water over an obstacle, such as a ravine or valley *Navigable aqueduct, or water bridge, a structure to carry navigable waterway canals over other rivers, valleys, railways or roads *Aqueduct (water supply), a watercourse constructed to convey water **Acequia, a community-operated watercourse used in Spain and former Spanish colonies in the Americas **Aryk, an artificial channel for redirecting water in Central Asia and other countries **Elan aqueduct carries water to Birmingham **Levada (Madeira), Levada, an irrigation channel or aqueduct specific to the Portuguese island of Madeira **Puquios, underground water systems in Chile and Peru *Roman aqueduct, water supply systems constructed during the Roman Empire **Aqueduct of Segovia, a Roman aqueduct in Segovia, Spain Anatomy *Cerebral aqueduct in the brain *Vestibular aqueduct in the inner ear Places *Aqueduct, former name of Monolith, California, U.S. * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphon
A siphon (; also spelled syphon) is any of a wide variety of devices that involve the flow of liquids through tubes. In a narrower sense, the word refers particularly to a tube in an inverted "U" shape, which causes a liquid to flow upward, above the surface of a reservoir, with no pump, but powered by the fall of the liquid as it flows down the tube under the pull of gravity, then discharging at a level lower than the surface of the reservoir from which it came. There are two leading theories about how siphons cause liquid to flow uphill, against gravity, without being pumped, and powered only by gravity. The traditional theory for centuries was that gravity pulling the liquid down on the exit side of the siphon resulted in reduced pressure at the top of the siphon. Then atmospheric pressure was able to push the liquid from the upper reservoir, up into the reduced pressure at the top of the siphon, like in a barometer or drinking straw, and then over. However, it has been demo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Rhône (department)
A building or edifice is an enclosed structure with a roof, walls and windows, usually standing permanently in one place, such as a house or factory. Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for numerous factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the concept, see ''Nonbuilding structure'' for contrast. Buildings serve several societal needs – occupancy, primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical separation of the human habitat (a place of comfort and safety) from the ''outside'' (a place that may be harsh and harmful at times). buildings have been objects or canvasses of much artistic expression. In recent years, interest in sustainable planning and building practi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fontenay Aqueduct
The Fontenay aqueduct, also known as Aqueduc du Cher, is a largely underground aqueduct that helped supply water to the Ancient history, ancient city of ''Caesarodunum'' (now Tours), alongside springs, wells, and another intramural aqueduct. It owes its most common name to a locality near Bléré, where its starting point was located, some 25 kilometers east-southeast of Tours, close to a main spring; the water table from which it springs is still exploited in the 21st century. The aqueduct was also fed by several smaller springs along the way. The aqueduct's route followed the Cher (river), Cher valley along its left bank, totally or partially embedded in the limestone hillside, except a few engineering structures required to cross valleys, almost in a straight line between Bléré and Saint-Avertin, a commune bordering Tours from which it is separated by the Cher. Although a large part of its route is attested, it has not been possible to identify its course beyond Saint-Averti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opus Reticulatum
''Opus reticulatum'' (also known as reticulate work) is a facing used for concrete walls in Ancient Roman architecture, Roman architecture from about the first century BCE to the early first century CE. Facings are a type of polygonal masonry used to apply a smooth finish to an opus caementicium’s core. They were built using small pyramid shaped tuff, a volcanic stone embedded into a concrete core.Vitr. ''De arch''. 2.8.1–4 Reticulate work was also combined with a multitude of other building materials to provide polychrome colouring and other facings to form new techniques. ''Opus reticulatum'' was generally used in central and southern Italy with the exception being its rare appearance in Africa (Roman province), Africa and Jericho. This was because of tuff's wider availability and ease of local transport in central Italy and Campania compared to other regions. Reticulate work developed in response to the advent of ''Roman concrete, opus caementicium'' and its predecessor, ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadrian
Hadrian ( ; ; 24 January 76 – 10 July 138) was Roman emperor from 117 to 138. Hadrian was born in Italica, close to modern Seville in Spain, an Italic peoples, Italic settlement in Hispania Baetica; his branch of the Aelia gens, Aelia ''gens'', the ''Aeli Hadriani'', came from the town of Atri, Abruzzo, Hadria in eastern Italy. He was a member of the Nerva–Antonine dynasty. Early in his political career, Hadrian married Vibia Sabina, grandniece of the ruling emperor, Trajan, and his second cousin once removed. The marriage and Hadrian's later succession as emperor were probably promoted by Trajan's wife Pompeia Plotina. Soon after his own succession, Hadrian had four leading senators unlawfully put to death, probably because they seemed to threaten the security of his reign; this earned him the senate's lifelong enmity. He earned further disapproval by abandoning Trajan's expansionist policies and territorial gains in Mesopotamia (Roman province), Mesopotamia, Assyria ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corpus Inscriptionum Latinarum
The ''Corpus Inscriptionum Latinarum'' (''CIL'') is a comprehensive collection of ancient Latin inscriptions. It forms an authoritative source for documenting the surviving epigraphy of classical antiquity. Public and personal inscriptions throw light on all aspects of Roman life and history. The ''Corpus'' continues to be updated in new editions and supplements. CIL also refers to the organization within the Berlin-Brandenburg Academy of Sciences and Humanities responsible for collecting data on and publishing the Latin inscriptions. It was founded in 1853 by Theodor Mommsen and is the first and major organization aiming at a comprehensive survey. Aim The ''CIL'' collects all Latin inscriptions from the whole territory of the Roman Empire, ordering them geographically and systematically. The earlier volumes collected and published authoritative versions of all inscriptions known at the time—most of these had been previously published in a wide range of publications. The desc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Head
Hydraulic head or piezometric head is a measurement related to liquid pressure (normalized by specific weight) and the liquid elevation above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22, eq.3.2a. It is usually measured as an equivalent liquid surface elevation, expressed in units of length, at the entrance (or bottom) of a piezometer. In an aquifer, it can be calculated from the depth to water in a piezometric well (a specialized water well), and given information of the piezometer's elevation and screen depth. Hydraulic head can similarly be measured in a column of water using a standpipe piezometer by measuring the height of the water surface in the tube relative to a common datum. The hydraulic head can be used to determine a ''hydraulic gradient'' between two or more points. Definition In fluid dynamics, the ''head'' at some point in an incompressible (constant density) flow is equal to the height of a static column of fluid whose pressure at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solder
Solder (; North American English, NA: ) is a fusible alloy, fusible metal alloy used to create a permanent bond between metal workpieces. Solder is melted in order to wet the parts of the joint, where it adheres to and connects the pieces after cooling. Metals or alloys suitable for use as solder should have a lower melting point than the pieces to be joined. The solder should also be resistant to oxidative and corrosive effects that would degrade the joint over time. Solder used in making electrical connections also needs to have favorable electrical characteristics. Soft solder typically has a melting point range of , and is commonly used in electronics, plumbing, and sheet metal work. Alloys that melt between are the most commonly used. Soldering performed using alloys with a melting point above is called "hard soldering", "silver soldering", or brazing. In specific proportions, some alloys are eutectic — that is, the alloy's melting point is the lowest possible for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
