• @TCBloo
    link
    21 year ago

    Violates conservation of momentum unless the portal/train slow down.

    • @whileloop
      link
      21 year ago

      Yes, but portals violate basic physics anyway.

      A portal that faces downwards into another portal is effectively a perpetual motion machine. Drop a ferromagnetic object into the loop and wrap some wires around the loop, now you have an infinite electric generator.