Foil

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Foil may refer to:

Contents 1 Materials 2 Paper making 3 Fluid dynamics (including aerodynamics) 4 Arts and culture 5 Mathematics 6 Navigation 7 Other uses

[edit] Materials

• Foil (metal), a thin sheet of metal
• 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 predecessor to the aluminium version
• Plastic foil, a thin layer of plastics

[edit] 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.

[edit] Fluid dynamics (including aerodynamics)

• Airfoil, used on aircraft
• Foil bearing, a type of fluid bearing
• Hydrofoil, a foil used to lift a moving ship
• Parafoil, a nonrigid airfoil, inflated during use

[edit] Arts and culture

• Foil stamping, printmaking technique
• Foil (band), a Seattle grunge rock group c.1990-1998.
• Foil (literature), 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

[edit] Mathematics

• FOIL method, a way to expand polynomials

[edit] Navigation

• Hydrofoil, a type of boat using foils designed for water
• Bruce foil, a foil used on an outrigger to prevent a boat from heeling
• Centreboard, a movable keel that functions as a foil
• Foilboard, a surfboard using a hydrofoil

[edit] Other uses

• First Order Inductive Learner - a rule-based learning algorithm.
• FOIL (programming language), one of two defunct computer programming languages
• Foil (fencing), one of the three weapons used in modern fencing
• FOIL - a bit of corporate jargon used within IBM in the past to refer to overhead presentation sheets. See "Film Over Incandescent Light" above. Some IBMers still use the term to this day, even to refer to electronic presentations.
• Freedom of information legislation or Freedom of Information Law

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