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Flotation (other)
Flotation (also spelled floatation) involves phenomena related to the relative buoyancy of objects. The term may also refer to: *Flotation (archaeology), a method for recovering very small artefacts from excavated sediments * Flotation (shares), an initial public offering of stocks or shares in a company *Floating exchange rate – changing policy to make a fixed currency have a floating rate may be called 'flotation'. *Flotation, any material added to the hull of a watercraft to keep the hull afloat *Flotation, the ability (as of a tire or snowshoes) to stay on the surface of soft ground or snow *"Floatation", a 1990 electronic music song by The Grid * Flotation process, in process engineering, a method for the separation of mixtures ** Dissolved air flotation (DAF), a water treatment process ** Froth flotation, a process for separating hydrophobic from hydrophilic materials ** Induced gas flotation, a water treatment process that clarifies wastewaters (or other waters) by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buoyancy
Buoyancy (), or upthrust, is the force exerted by a fluid opposing the weight of a partially or fully immersed object (which may be also be a parcel of fluid). In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus, the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. The pressure difference results in a net upward force on the object. The magnitude of the force is proportional to the pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the submerged volume of the object, i.e. the Displacement (fluid), displaced fluid. For this reason, an object with average density greater than the surrounding fluid tends to sink because its weight is greater than the weight of the fluid it displaces. If the objec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flotation (archaeology)
This page is a glossary of archaeology, the study of the human past from material remains. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also * Outline of archaeology * Table of years in archaeology * Glossary of history References Bibliography * * * * * * * * * External links About.com Archaeology Glossary {{Glossaries of science and engineering Archaeology Archaeology or archeology is the study of human activity through the recovery and analysis of material culture. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flotation (shares)
An initial public offering (IPO) or stock launch is a public offering in which shares of a company are sold to institutional investors and usually also to retail (individual) investors. An IPO is typically underwritten by one or more investment banks, who also arrange for the shares to be listed on one or more stock exchanges. Through this process, colloquially known as ''floating'', or ''going public'', a privately held company is transformed into a public company. Initial public offerings can be used to raise new equity capital for companies, to monetize the investments of private shareholders such as company founders or private equity investors, and to enable easy trading of existing holdings or future capital raising by becoming publicly traded. After the IPO, shares are traded freely in the open market at what is known as the free float. Stock exchanges stipulate a minimum free float both in absolute terms (the total value as determined by the share price multiplied by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floating Exchange Rate
In macroeconomics and economic policy, a floating exchange rate (also known as a fluctuating or flexible exchange rate) is a type of exchange rate regime in which a currency's value is allowed to fluctuate in response to foreign exchange market events. A currency that uses a floating exchange rate is known as a ''floating currency''. In contrast, a '' fixed currency'' is one where its value is specified in terms of material goods, another currency, or a set of currencies. The idea of a fixed currency is to reduce currency fluctuations. In the modern world, most of the world's currencies are floating, and include the most widely traded currencies: the United States dollar, the euro, the Japanese yen, the pound sterling, the Australian dollar, and the Swiss franc. However, even with floating currencies, central banks sometimes participate in markets to attempt to influence the value of floating exchange rates. The Canadian dollar has not seen interference by the Canadian nationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull (watercraft)
A hull is the watertight body of a ship, boat, submarine, or flying boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or Mast (sailing), mast. The line where the hull meets the water surface is called the waterline. General features There is a wide variety of hull types that are chosen for suitability for different usages, the hull shape being dependent upon the needs of the design. Shapes range from a nearly perfect box, in the case of scow barges, to a needle-sharp surface of revolution in the case of a racing multihull sailboat. The shape is chosen to strike a balance between cost, hydrostatic considerations (accommodation, load carrying, and stability), hydrodynamics (speed, power requirements, and motion and behavior in a seaway) and special considerations for the ship's role, such as the rounded bow of an icebreaker or the flat bot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Grid
The Grid are an English electronic dance group, consisting of David Ball (formerly of Soft Cell) and Richard Norris, with guest contributions from other musicians. They are best known for the hits "Swamp Thing", "Texas Cowboys", "Crystal Clear", "Rollercoaster" and "Floatation". Band members * Richard Norris – keyboards, drum programming * David Ball – keyboards, programming * Sacha Rebecca Souter – vocals History The Grid formed in 1988, after both Ball and Norris had worked with Psychic TV on the '' Jack the Tab – Acid Tablets Volume One'' album. They recorded the track "Meet Every Situation Head On" together as "M.E.S.H.". The Grid had their first success with their debut single, "Floatation", released on East West Records in 1990. They went on to release a string of ten UK hit singles and four albums, and toured the UK, Europe, Asia and Australia. The group's 1994 album '' Evolver'' reached No. 14 in the UK Albums Chart. The lead single from this album, "Swa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissolved Air Flotation
Dissolved air flotation (DAF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids. The removal is achieved by dissolving air in the water or wastewater under pressure and then releasing the air at atmospheric pressure in a flotation tank basin. The released air forms tiny bubbles which adhere to the suspended matter, causing the suspended matter to float to the surface of the water where it may then be removed by a skimming device. Dissolved air flotation is very widely used in treating the industrial wastewater effluents from oil refineries, petrochemical and chemical plants, natural gas processing plants, paper mills, general water treatment and similar industrial facilities. A very similar process known as '' induced gas flotation'' is also used for wastewater treatment. '' Froth flotation'' is commonly used in the processing of mineral ores. In the oil industry, '' dissolved gas flotation'' (DGF) un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Induced Gas Flotation
Induced gas flotation (IGF) is a water treatment process that clarifies wastewater (or other waters) by removing suspended matter such as oil or solids. The removal is achieved by injecting gas bubbles into the water or wastewater in a flotation tank or basin. The small bubbles adhere to the suspended matter causing the suspended matter to float to the surface of the water where it may then be removed by a skimming device. Induced gas flotation is very widely used in treating the industrial wastewater effluents from oil refineries, petrochemical and chemical plants, natural gas processing plants and similar industrial facilities. A very similar process known as ''dissolved air flotation'' is also used for waste water treatment. '' Froth flotation'' is commonly used in the processing of mineral ores. IGF units in the oil industry do not use air as the flotation medium due to the explosion risk. These IGF units use natural gas or nitrogen to create the bubbles. __TOC__ Process descr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isolation Tank
An isolation tank, sensory deprivation tank, float tank, float pod, float cabin, flotation tank, or sensory attenuation tank is a water filled, pitch-black, light-proof, soundproof environment heated to the same temperature as the skin. Method The tank is filled with of water which contains enough dissolved Epsom salt to create a specific gravity of approximately 1.25–1.26, enabling a person to float freely with their face above the water. In order to reduce thermal sensations, the water in the float tank is maintained at approximately skin temperature, around 35 °C. One typically floats without clothing to minimize tactile sensations, and earplugs are worn during floating both to minimize auditory sensations and to keep Epsom salt out of the ear canal. Several different tank designs exist. Pod and cabin designs utilize enclosures with doors to enter or exit the tank, whereas pool designs are built from circular fiberglass and lack an enclosure to reduce the risk of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
