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Hydraulic Rams
A hydraulic ram, or hydram, is a cyclic water pump powered by hydropower. It takes in water at one " hydraulic head" (pressure) and flow rate, and outputs water at a higher hydraulic head and lower flow rate. The device uses the water hammer effect to develop pressure that allows a portion of the input water that powers the pump to be lifted to a point higher than where the water originally started. The hydraulic ram is sometimes used in remote areas, where there is both a source of low-head hydropower and a need for pumping water to a destination higher in elevation than the source. In this situation, the ram is often useful, since it requires no outside source of power other than the kinetic energy of flowing water. History The Alhambra, built by Nasrid Sultan Ibn al-Ahmar of Granada beginning AD1238, used a hydram to raise water. Through a first reservoir, filled by a channel from the Darro River, water emptied via a large vertical channel into a second reservoir b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oulton, Cheshire
In the early 18th century the Oulton Estate was home to the Egerton family and comprised a manor house and a formal garden surrounded by farmland in Cheshire, England. Later in the century the farmland was converted into a park. The estate is now the site of the motor racing track called Oulton Park. History Grounds In 1731, Philip Egerton (1694–1766) inherited the estate upon the death of his uncle, John Egerton (1656–1731). At that time the estate comprised a house, a formal garden and farmland totalling . Around 1752, Philip Egerton began to construct a brick wall to enclose the estate plus some additional fields, an area totalling . At his death in 1766, Philip was succeeded by his brother John, and then in 1770, by his son Philip (1738–1786). By this time the fashion for formal gardens had been overtaken by the concept of a landscaped garden with surrounding parkland. Philip Egerton commissioned William Emes to plan this for his estate. Emes' plan was pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage
Drainage is the natural or artificial removal of a surface's water and sub-surface water from an area with excess of water. The internal drainage of most agricultural soils is good enough to prevent severe waterlogging (anaerobic conditions that harm root growth), but many soils need artificial drainage to improve production or to manage water supplies. History Early history The Indus Valley civilization had sewerage and drainage systems. All houses in the major cities of Harappa and Mohenjo-daro had access to water and drainage facilities. Waste water was directed to covered gravity sewers, which lined the major streets. 18th and 19th century The invention of hollow-pipe drainage is credited to Sir Hugh Dalrymple, who died in 1753. Current practices Geotextiles New storm water drainage systems incorporate geotextile filters that retain and prevent fine grains of soil from passing into and clogging the drain. Geotextiles are synthetic textile fabrics specially ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanitary Sewer
A sanitary sewer is an underground pipe or tunnel system for transporting sewage from houses and commercial buildings (but not stormwater) to a sewage treatment plant or disposal. Sanitary sewers are a type of gravity sewer and are part of an overall system called a "sewage system" or sewerage. Sanitary sewers serving industrial areas may also carry industrial wastewater. In municipalities served by sanitary sewers, separate storm drains may convey surface runoff directly to surface waters. An advantage of sanitary sewer systems is that they avoid combined sewer overflows. Sanitary sewers are typically much smaller in diameter than combined sewers which also transport urban runoff. Backups of raw sewage can occur if excessive stormwater inflow or groundwater infiltration occurs due to leaking joints, defective pipes etc. in aging infrastructure. Purpose Sewage treatment is less effective when sanitary waste is diluted with stormwater, and combined sewer overflows occur when r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kent
Kent is a county in South East England and one of the home counties. It borders Greater London to the north-west, Surrey to the west and East Sussex to the south-west, and Essex to the north across the estuary of the River Thames; it faces the French department of Pas-de-Calais across the Strait of Dover. The county town is Maidstone. It is the fifth most populous county in England, the most populous non-Metropolitan county and the most populous of the home counties. Kent was one of the first British territories to be settled by Germanic tribes, most notably the Jutes, following the withdrawal of the Romans. Canterbury Cathedral in Kent, the oldest cathedral in England, has been the seat of the Archbishops of Canterbury since the conversion of England to Christianity that began in the 6th century with Saint Augustine. Rochester Cathedral in Medway is England's second-oldest cathedral. Located between London and the Strait of Dover, which separates England from mainla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erith
Erith () is an area in south-east London, England, east of Charing Cross. Before the creation of Greater London in 1965, it was in the historical county of Kent. Since 1965 it has formed part of the London Borough of Bexley. It lies north-east of Bexleyheath and north-west of Dartford, on the south bank of the River Thames. The population is 45,345. The town centre has been modernised with further dwellings added since 1961. The curved riverside high street has three listed buildings, including the Church of England church and the Carnegie Building. Erith otherwise consists mainly of suburban housing. It is linked to central London and Kent by rail and to Thamesmead by a dual carriageway. It has the longest pier in London, and retains a coastal environment with salt marshes alongside industrial land. History Pre-medieval Work carried out at the former British Gypsum site in Church Manorway by the Museum of London Archaeological Service shows that the area was cover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Somerset
( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_lieutenant_name = Mohammed Saddiq , high_sheriff_office =High Sheriff of Somerset , high_sheriff_name = Mrs Mary-Clare Rodwell (2020–21) , area_total_km2 = 4171 , area_total_rank = 7th , ethnicity = 98.5% White , county_council = , unitary_council = , government = , joint_committees = , admin_hq = Taunton , area_council_km2 = 3451 , area_council_rank = 10th , iso_code = GB-SOM , ons_code = 40 , gss_code = , nuts_code = UKK23 , districts_map = , districts_list = County council area: , MPs = * Rebecca Pow (C) * Wera Hobhouse ( LD) * Liam Fox (C) * David Warburton (C) * Marcus Fysh (C) * Ian Liddell-Grainger (C) * James Heappey (C) * Jacob Rees-Mogg (C) * John Penrose (C) , police = Avon and Somerset Police ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Josiah Easton
Josiah ( or ) or Yoshiyahu; la, Iosias was the 16th king of Judah (–609 BCE) who, according to the Hebrew Bible, instituted major religious reforms by removing official worship of gods other than Yahweh. Josiah is credited by most biblical scholars with having established or compiled important Hebrew scriptures during the "Deuteronomic reform" which probably occurred during his rule. Josiah became king of the Kingdom of Judah at the age of eight, after the assassination of his father, King Amon. Josiah reigned for 31 years, from 641/640 to 610/609 BCE. Josiah is known only from biblical texts; no reference to him exists in other surviving texts of the period from Egypt or Babylon, and no clear archaeological evidence, such as inscriptions bearing his name, has ever been found. Nevertheless, most scholars believe that he existed historically and that the absence of documents is due to few documents of any sort surviving from this period, and to Jerusalem having been occupied, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matthew Boulton
Matthew Boulton (; 3 September 172817 August 1809) was an English manufacturer and business partner of Scottish engineer James Watt. In the final quarter of the 18th century, the partnership installed hundreds of Boulton & Watt steam engines, which were a great advance on the state of the art, making possible the mechanisation of factories and mills. Boulton applied modern techniques to the minting of coins, striking millions of pieces for Britain and other countries, and supplying the Royal Mint with up-to-date equipment. Born in Birmingham, he was the son of a Birmingham manufacturer of small metal products who died when Boulton was 31. By then Boulton had managed the business for several years, and thereafter expanded it considerably, consolidating operations at the Soho Manufactory, built by him near Birmingham. At Soho, he adopted the latest techniques, branching into silver plate, ormolu and other decorative arts. He became associated with James Watt when Watt's bus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voiron
Voiron (; frp, Vouèron) is a commune (French municipality) in the ninth district of the Isère department in southeastern France. It is the capital of the canton of Voiron and has been part of the Grenoble-Alpes Métropole since 2010. Voiron is located northwest of Grenoble and southeast of Lyon. Its roughly 20,000 inhabitants are named ''Voironnais'' in French. Voiron, along with Chambéry and Grenoble, is a gateway city of the Chartreuse Mountains in the Auvergne-Rhône-Alpes region. History Voiron had been a part of the County of Savoy in the Middle Ages. In the Treaty of Paris (1355) the count exchanged Voiron and the rest of the region between the rivers Rhône and Isère (watered by the Guiers Mort) for Faucigny and Gex from France. 17th and 18th centuries In 1700, the capital of the Chartreuse massif and its surrounding area had about 1,200 inhabitants and more than a hundred of them worked in the processing of hemp. Since the beginning of the century, producti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paper Mill
A paper mill is a factory devoted to making paper from vegetable fibres such as wood pulp, old rags, and other ingredients. Prior to the invention and adoption of the Fourdrinier machine and other types of paper machine that use an endless belt, all paper in a paper mill was made by hand, one sheet at a time, by specialized laborers. History Historical investigations into the origin of the paper mill are complicated by differing definitions and loose terminology from modern authors: Many modern scholars use the term to refer indiscriminately to all kinds of mills, whether powered by humans, by animals or by water. Their propensity to refer to any ancient paper manufacturing center as a "mill", without further specifying its exact power source, has increased the difficulty of identifying the particularly efficient and historically important water-powered type. Human and animal-powered mills The use of human and animal powered mills was known to Muslim and Chinese paperma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Air Balloon
A hot air balloon is a lighter-than-air aircraft consisting of a bag, called an envelope, which contains heated air. Suspended beneath is a gondola or wicker basket (in some long-distance or high-altitude balloons, a capsule), which carries passengers and a source of heat, in most cases an open flame caused by burning liquid propane. The heated air inside the envelope makes it buoyant, since it has a lower density than the colder air outside the envelope. As with all aircraft, hot air balloons cannot fly beyond the atmosphere. The envelope does not have to be sealed at the bottom, since the air inside the envelope is at about the same pressure as the surrounding air. In modern sport balloons the envelope is generally made from nylon fabric, and the inlet of the balloon (closest to the burner flame) is made from a fire-resistant material such as Nomex. Modern balloons have been made in many shapes, such as rocket ships and the shapes of various commercial products, though the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
