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Foil
Foil may refer to: Materials * Foil (metal), a quite thin sheet of metal, usually manufactured with a rolling mill machine * Metal leaf, a very thin sheet of decorative metal * Aluminium foil, a type of wrapping for food * Tin foil, metal foil made of tin, the direct predecessor to aluminium foil * Transparency (projection), a thin sheet of transparent flexible material, placed on an overhead projector for display to an audience Fluid dynamics * Foil (fluid mechanics) ** Airfoil, a foil operating in air ** Hydrofoil, a foil operating in water ** Parafoil, a non-rigid airfoil, inflated during use * Foil bearing, a type of fluid bearing Arts and culture * Foil (architecture), decorative device derived from cusps of circles * Foil stamping, a printmaking technique * Foil (fencing), one of the three weapons used in modern fencing * Foil (fiction), a subsidiary character who emphasizes the traits of a main character ** Comedic or comic foil, the straight man in a comedy double act * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foil (song)
"Foil" is a song by American satirical music, satirical singer "Weird Al" Yankovic from his fourteenth studio album, ''Mandatory Fun'' (2014). The song is a parody of the 2013 single "Royals (Lorde song), Royals" by Lorde. It begins as an ode to the uses of aluminum foil for food storage, but becomes a parody of conspiracy theories, the New World Order (conspiracy theory), New World Order, and the New World Order (conspiracy theory)#Illuminati, Illuminati in its second verse. "Foil" received positive reviews from music critics, and peaked at number three on the ''Billboard (magazine), Billboard'' Comedy Digital Tracks. The song's music video stars Yankovic as the host of a cooking show, and features cameo appearances from Patton Oswalt, Thomas Lennon (actor), Tom Lennon, and Ben Garant, Robert Benjamin Garant. Background and composition "Foil" is a parody of Lorde's 2013 single "Royals (Lorde song), Royals". It retains the original song's instrumentation, but is slowed down to mat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foil Bearing
A foil bearing, also known as a foil-air bearing, is a type of air bearing. A shaft is supported by a compliant, spring-loaded foil journal lining. Once the shaft is spinning fast enough, the working fluid (usually air) pushes the foil away from the shaft so that no contact occurs. The shaft and foil are separated by the air's high pressure, which is generated by the rotation that pulls gas into the bearing via viscosity effects. The high speed of the shaft with respect to the foil is required to initiate the air gap, and once this has been achieved, no wear occurs. Unlike aerostatic or hydrostatic bearings, foil bearings require no external pressurisation system for the working fluid, so the hydrodynamic bearing is self-starting. Development Foil bearings were first developed in the late 1950s by AiResearch Mfg. Co. of the Garrett Corporation using independent R&D funds to serve military and space applications. They were first tested for commercial use in United Airlines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foil (fencing)
A foil is one of the three weapons used in the sport of fencing, all of which are metal. It is flexible, rectangular in cross section, and weighs under a pound. As with the épée, points are only scored by contact with the tip, which, in electrically scored tournaments, is capped with a spring-loaded button to signal a touch. A foil fencer's uniform features the lamé (a vest, electrically wired to record valid hits). The foil is the most commonly used weapon in competition.https://idrottonline.se/LjungbyFK-Faktning/globalassets/ljungby-fk---faktning/dokument/a-parents-guide-to-fencing.pdf Non-electric and electric foils Background There are two types of foils that are used in modern fencing. Both types are made with the same basic parts: the pommel, grip, guard, and blade. The difference between them is one is electric, and the other is known as "steam" or "dry". The blades of both varieties are capped with a plastic or rubber piece, with a button at the tip in electric b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aluminium Foil
Aluminium foil (or aluminum foil in North American English; often informally called tin foil) is aluminium prepared in thin metal leaves with a thickness less than ; thinner gauges down to are also commonly used. Standard household foil is typically thick, and heavy duty household foil is typically . The foil is pliable, and can be readily bent or wrapped around objects. Thin foils are fragile and are sometimes laminated with other materials such as plastics or paper to make them stronger and more useful. Annual production of aluminium foil was approximately in Europe and in the U.S."Foil & Packaging" . The Aluminum Association (USA). in 2003. Approximately 75% of aluminium foil is used for |
Foilboard
A foilboard or hydrofoil board is a surfboard with a hydrofoil that extends below the board into the water. This design causes the board to leave the surface of the water at various speeds. Background Laird Hamilton, a prominent figure in the invention of big wave tow-in surfing, later discovered the foilboard's capability to harness swell energy with the use of a jet ski, pulling the rider into a wave. The original stand-up design, used with the use of snow board boots, allowed the rider to glide with the moving wave by harnessing the kinetic energy with the underwater swell. Hydrofoil kiteboards allow the rider to achieve the same result with the use of a kite. The hydrofoil minimizes the effects of choppy or rough conditions. Due to the hydrofoil's underwater characteristics, the rider can angle higher into the wind than on traditional kiteboards which ride on the surface of the water. Rush Randle, a noted acrobatic surfer and big wave windsurfer, is credited with being the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrofoil
A hydrofoil is a lifting surface, or foil, that operates in water. They are similar in appearance and purpose to aerofoils used by aeroplanes. Boats that use hydrofoil technology are also simply termed hydrofoils. As a hydrofoil craft gains speed, the hydrofoils lift the boat's hull out of the water, decreasing drag and allowing greater speeds. Description The hydrofoil usually consists of a winglike structure mounted on struts below the hull, or across the keels of a catamaran in a variety of boats (see illustration). As a hydrofoil-equipped watercraft increases in speed, the hydrofoil elements below the hull(s) develop enough lift to raise the hull out of the water, which greatly reduces hull drag. This provides a corresponding increase in speed and fuel efficiency. Wider adoption of hydrofoils is prevented by the increased complexity of building and maintaining them. Hydrofoils are generally prohibitively more expensive than conventional watercraft above a certain disp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tin Foil
Tin foil, also spelled tinfoil, is a thin foil made of tin. Tin foil was superseded after World War II by cheaper and more durable aluminium foil, which is still referred to as "tin foil" in many regions (an example of a misnomer). History Foil made from a thin leaf of tin was commercially available before its aluminium counterpart. In the late 19th century and early 20th century, tin foil was in common use, and some people continue to refer to the new product by the name of the old one. Tin foil is stiffer than aluminium foil. It tends to give a slight tin taste to food wrapped in it, which is a major reason it has largely been replaced by aluminium and other materials for wrapping food. Because of its corrosion resistance, oxidation resistance, availability, low cost, low toxicity, and slight malleability, tin foil was used as a filling for tooth cavities prior to the 20th century. The first audio recordings on phonograph cylinders were made on tin foil. See also * Tin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foil (metal)
A foil is a very thin sheet of metal, typically made by hammering or rolling.Britannica, The Editors of Encyclopaedia. "foil". Encyclopedia Britannica, 6 Nov. 2008https://www.britannica.com/technology/foil-metallurgy.Accessed 11 September 2022. Foils are most easily made with malleable metal, such as aluminium, copper, tin, and gold. Foils usually bend under their own weight and can be torn easily. For example, aluminium foil is usually about 1/1000 inch (0.03 mm), whereas gold (more malleable than aluminium) can be made into foil only a few atoms thick, called gold leaf. Extremely thin foil is called metal leaf. Leaf tears very easily and must be picked up with special brushes. Foil is commonly used in household applications. It is also useful in survival situations, in the form of a "space blanket", where the reflective surface reduces the degree of hypothermia caused by thermal radiation. See also * Aluminium foil * Tin foil * Gold leaf * Metal leaf References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foil (fiction)
In any narrative, a foil is a character who contrasts with another character; typically, a character who contrasts with the protagonist, in order to better highlight or differentiate certain qualities of the protagonist. A foil to the protagonist may also be the antagonist of the plot. In some cases, a subplot can be used as a foil to the main plot. This is especially true in the case of metafiction and the " story within a story" motif. A foil usually either differs dramatically or is an extreme comparison that is made to contrast a difference between two things. Thomas F. Gieryn places these uses of literary foils into three categories, which Tamara A. P. Metze explains as: those that emphasize the ''heightened contrast'' (this is different because ...), those that operate by ''exclusion'' (this is not X because...), and those that assign ''blame'' ("due to the slow decision-making procedures of government..."). Etymology The word ''foil'' comes from the old practice of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foil (architecture)
A foil is an architectural device based on a symmetrical rendering of leaf shapes, defined by overlapping circles of the same diameter that produce a series of cusps to make a lobe. Typically, the number of cusps can be three (trefoil), four (quatrefoil), five (cinquefoil), or a larger number (multifoil).Pevsner, Nikolaus; Harris, John: ''The Buildings of England: Lincolnshire'', Penguin (1964); revised by Nicholas Antram (1989), Yale University Press, p. 726. Foil motifs may be used as part of the heads and tracery of window lights, complete windows themselves, the underside of arches, in heraldry, within panelling, and as part of any decorative or ornament device. Foil types are commonly found in Gothic and Islamic Islam (; ar, ۘالِإسلَام, , ) is an Abrahamic monotheistic religion centred primarily around the Quran, a religious text considered by Muslims to be the direct word of God (or '' Allah'') as it was revealed to Muhammad, the mai ... archi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airfoil
An airfoil (American English) or aerofoil (British English) is the cross-sectional shape of an object whose motion through a gas is capable of generating significant lift, such as a wing, a sail, or the blades of propeller, rotor, or turbine. A solid body moving through a fluid produces an aerodynamic force. The component of this force perpendicular to the relative freestream velocity is called lift. The component parallel to the relative freestream velocity is called drag. An airfoil is a streamlined shape that is capable of generating significantly more lift than drag. Airfoils can be designed for use at different speeds by modifying their geometry: those for subsonic flight generally have a rounded leading edge, while those designed for supersonic flight tend to be slimmer with a sharp leading edge. All have a sharp trailing edge. Foils of similar function designed with water as the working fluid are called hydrofoils. The lift on an airfoil is primarily the result o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foil Stamping
Hot stamping or foil stamping is a printing method of relief printing in which pre-dried ink or foils are transferred to a surface at high temperatures. The method has diversified since its rise to prominence in the 19th century to include a variety of processes. After the 1970s, hot stamping became one of the most important methods of decoration on the surface of plastic products. Process In a hot stamping machine, a die is mounted and heated, with the product to be stamped placed beneath it. A metallized or painted roll-leaf carrier is inserted between the two, and the die presses down through it. The dry paint or foil used is impressed into the surface of the product. The dye-stamping process itself is non-polluting because the materials involved are dry. Pressure and heat cause the relevant sections of the foil to become detached from the carrier material and become bonded with the printing surface. Tools Along with foil stamping machines, among the commonly used tools in ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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