Five Nights at Freddy's (series)

Five Nights at Freddy's (FNaF) is a series of indie survival horror point-and-click video games created, designed, developed and published by Scott Cawthon.

The franchise is composed of a four-title main series and one spin-off. The first three games revolve around the player working as a night guard at a pizzeria (a horror attraction in the third game), in which they must utilize several in-game mechanics, most notably checking security cameras, to survive against animatronic characters, which become mobile and homicidal after-hours. The fourth game, which is drastically different than its predecessors, takes place in the house of a child who must defend against "nightmare" versions of the animatronics by shutting doors and checking locations by moving around.

A spin-off game to the franchise, titled FNaF World, was released on January 21, 2016. A novel adaptation, Five Nights at Freddy's: The Silver Eyes, was released on December 17, 2015. A film adaptation is also in production at Warner Bros. Pictures.

NAF

NAF or Naf may refer to:

In organizations:

In defense:

Sodium fluoride

Sodium fluoride /ˌsoʊdiəm ˈflʊəraɪd/ is an inorganic chemical compound with the formula NaF. A colorless solid, it is a source of the fluoride ion in diverse applications. Sodium fluoride is less expensive and less hygroscopic than the related salt potassium fluoride.

Structure, general properties, occurrence

Sodium fluoride is an ionic compound, dissolving to give separated Na⁺ and F⁻ ions. Like sodium chloride, it crystallizes in a cubic motif where both Na⁺ and F⁻ occupy octahedral coordination sites; its lattice spacing, approximately 462 pm, is somewhat smaller than that of sodium chloride.

The mineral form of NaF, villiaumite, is moderately rare. It is known from plutonic nepheline syenite rocks.

Production

NaF is prepared by neutralizing hydrofluoric acid or hexafluorosilicic acid (H₂SiF₆), byproducts of the reaction of fluorapatite (Ca₅(PO₄)₃F) (from phosphate rock) from the production of superphosphate fertilizer. Neutralizing agents include sodium hydroxide and sodium carbonate. Alcohols are sometimes used to precipitate the NaF: