4-D film

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A 4-D film is a marketing term that describes an entertainment presentation system combining a 3-D film with physical effects in the theatre that occur in synchronization with the film. Since the physical effects are expensive to set up, 4-D films are currently only found at special venues, usually in amusement parks.

Some of the effects currently simulated in 4-D films include rain, wind, and vibration. The use of water sprays and air jets is also common. A 4-D film is not shown in a motion simulator, although some seats in 4-D venues vibrate or may move a few inches during the presentation.

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