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Revision as of 16:26, 2 September 2002 by Andre Engels (talk | contribs) (disambiguate, remove nametag)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)A tractor beam is a device used on the Starship Enterprise on the television show Star Trek that is part of the deflector dish and employs graviton particles, the theoretical particles that cause gravity, the beam has a focusing length, at a certain length the graviton particle field intensity, the beam "locks" on to an object and can adjust its focusing length to attract or repel the object.