Special effect

Illusions or tricks to change appearance

Special effects (often abbreviated as F/X or simply FX) are illusions or visual tricks used in the theater, film, television, video game, amusement park, and simulator industries to simulate the fictional events in a story or virtual world. It is sometimes abbreviated as SFX, but this may also refer to sound effects. Special effects are traditionally divided into the categories of mechanical effects and optical effects.

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