| http://www.w3.org/ns/prov#value | - The Optikinetics projectors have an interchangeable series of cartridges that are capable of producing various beam effects through mist, Thus the Optikinetic projectors were used in place of traditional instruments to light actors for monologues and scenes of two or three characters and also to illuminate the witches and other performers as they climbed the ropes and performed in space.
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