Foil: Facts, Discussion Forum, and Encyclopedia Article

Foil

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	Foil may refer to: Materials: Foil (chemistry) Foil (chemistry) A foil is a very thin sheet of metal, usually made by hammering or rolling a piece of metal. Foils are most easily made with malleable metals, such as aluminium, copper, tin, and gold.... , a thin sheet of metal Metal leaf Metal leaf Metal leaf, also called composition leaf or schlagmetal, is a thin foil used for decoration. Metal leaf can come in many different shades.... , a very thin sheet of decorative metal Aluminium foil Aluminium foil Aluminium foil is aluminium prepared in thin metal leafs, with a thickness less than 0.2 mm / 0.008 in, although much thinner gauges down to 0.006 mm are commonly used.... , a type of wrapping for food Tin foil Tin foil Tinfoil or tin foil is a thin metal leaf made of tin.Actual tin foil was superseded by cheaper and more durable aluminium foil, which is sometimes called "tin foil" because of its former material.... , metal foil made of tin, the predecessor to the aluminium version Plastic foil, a thin layer of plastics Paper making: Foil (papermaking), a type of ving under the wire in the wire section of a paper machine creating a vacuum pulse to eliminate water from the stock (fibre/water slurry). Ultrasonic foil (papermaking), a type of high frequency vibrating foil under the wire, creating cavitation, imploding vacuum bubbles, in the stock on the wire. The shock waves from the imploding bubbles will distribute the fibres more uniform in the paper web and this will give a stronger paper. In fluid dynamics (including aerodynamics): Airfoil Airfoil An airfoil or aerofoil is the shape of a wing or blade or sail as seen in cross-section.An airfoil-shaped body moved through a fluid produces a force perpendicular to the motion called lift .... , used on aircraft Foil bearing Foil bearing Foil bearings are a type of fluid bearing. A shaft is supported by a compliant, spring loaded foil journal lining. Once the shaft is spinning fast enough, the working fluid , pushes the foil away from the shaft so that there is no more contact.... , a type of fluid bearing Hydrofoil Hydrofoil A hydrofoil is a boat with wing-like airfoils mounted on struts below the hull . As the craft increases its speed the hydrofoils develop enough lift for the boat to become foilborne - i.e.... , a foil used to lift a moving ship Parafoil Parafoil A parafoil is a nonrigid airfoil with an aerodynamic cell structure which is inflated by the wind. Ram-air inflation forces the parafoil into a classic wing cross-section.... , a nonrigid airfoil, inflated during use In arts and culture: Foil stamping Foil Stamping Foil stamping, typically a commercial print process, is the application of pigment or metallic foil, often gold or silver, but can also be various patterns or what is known as pastel foil which is a flat opaque color or whitea special film-backed material, to paper where a heated die is stamped onto the foil, making it adhere to the surface... , printmaking technique Foil (band) Foil (band) Foil a grunge rock group from the Seattle, Washington area c.1990-1998 featuring Steve Wied, formerly of Tad , Skin Yard, Willard and Daddy Hate Box on vocals and drums.... , a Seattle grunge rock group c.1990-1998. Foil (literature) Foil (literature) A foil is a character that contrasts with another character and so highlights various facets of the main character's personality. A foil usually has some important characteristics in common with the other character, such as, frequently, superficial traits or personal history.... , a character who emphasizes the traits of a main character Comedic foil, (or comic foil), is the straight man in a comedy team. Film Over Incandescent Light, an image projection technique In mathematics: FOIL rule FOIL rule The FOIL rule, also sometimes known as the double distributivity property or more colloquially as foiling, is commonly taught to students learning algebra, as a mnemonic for remembering how to multiply two binomials .... , a way to expand polynomials In navigation: Hydrofoil Hydrofoil A hydrofoil is a boat with wing-like airfoils mounted on struts below the hull . As the craft increases its speed the hydrofoils develop enough lift for the boat to become foilborne - i.e.... , a type of boat using foils designed for water Bruce foil Bruce foil A Bruce foil is a variant of the leeboard, consisting of a foil typically mounted on an outrigger and always set at an angle to provide both lateral and downwards force.... , a foil used on an outrigger to prevent a boat from heeling Centreboard Centreboard A centerboard is a retractable keel which pivots out of a slot in the hull of a sailboat, known as a centerboard trunk or case. The pivoting ability allows the centerboard to be raised to operate in shallow waters, to move the center of lateral resistance to offset changes to the sailplan that move the center of effort aft and to reduce dra... , a movable keel that functions as a foil Foilboard Foilboard A foilboard or hydrofoil board is a stand up board with a hydrofoil that extends below the board into the water. The result of this design causes the board to leave the surface of the water at various speeds.... , a surfboard using a hydrofoil Foil may also be: First Order Inductive Learner First Order Inductive Learner In machine learning, First Order Inductive Learner or FOIL is a rule-based learning algorithm.... - a rule-based learning algorithm. FOIL programming language FOIL programming language FOIL was the name for two different programming languages.... , one of two defunct computer programming languages Foil (fencing) Foil (fencing) A foil is a type of weapon used in Fencing . It is the most common weapon in terms of usage in competition, and is usually the choice for elementary classes for fencing in general.... , one of the three weapons used in modern fencing