Traherism

Traherism was an artificial force that was carried by trahon particles. This force was able to push or pull on matter, and thus could be used to create repulsorlifts, as well as artificial gravity for spacecraft, tractor beams, gravity wells and momentum compensators. Traherism was generated using various types of exotic matter. It required energy to be generated, and thus repulsorlift vehicles that lost all power would fall to the ground. Certain kinds of deflector shields could interfere with traherism, and thus could prevent repulsorlift vehicles from penetrating them. For this reason, many military vehicles used walker technology or wheeled vehicles instead of repulsorcraft.