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In elementary algebra, FOIL is a mnemonic for the standard method of multiplying two binomials [1] —hence the method may be referred to as the FOIL method. The word FOIL is an acronym for the four terms of the product: The general form is. Note that a is both a "first" term and an "outer" term; b is both a "last" and "inner" term, and so forth.
Foil (narrative) 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. [2][3][4] A foil to the protagonist may also be the antagonist of the plot. [5]
Aluminium foil (or aluminum foil in American English; occasionally called tin foil) is aluminium prepared in thin metal leaves. 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.
Foil (fencing) Arianna Errigo (L) competes against Carolin Golubytskyi (R) in the final of the women's foil event, 2013 World Fencing Championships. A foil is one of the three weapons used in the sport of fencing. It is a flexible sword of total length 110 cm (43 in) or under, rectangular in cross section, weighing under 500 g (18 oz), with a ...
Add a comment... The aluminum foil allows the flame to stay even and continuously radiate heat, as well as retain heat to help melt the leftover wax. Ellie Martin Cliffe, executive editor at our ...
A: blue line = chord, green line = camber mean-line, B: leading-edge radius, C: xy coordinates for the profile geometry (chord = x axis; y axis line on that leading edge) The NACA airfoil series is a set of standardized airfoil shapes developed by this agency, which became widely used in the design of aircraft wings.
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 ...
The president (referee or director) then stops the bout and reviews the relevant phases of the action, polling the judges at each stage to determine whether there was a touch, and (in foil and sabre) whether the touch was valid or invalid. The judges answer "Yes", "Yes, but off-target" (in foil and sabre), "No", or "Abstain".