tromagnetic waves in a certain pattern. This mysterious wall of light would enable time, space, gravity and matter to be altered at will, and engendered an array of Tesla pro- posals that seem to leap straight out of science fiction, including anti-gravity air- ships, teleportation, and time travel. The single strangest invention Tesla ever proposed was probably the "thought photogra- phy" machine. He reasoned that a thought formed in the mind created a corresponding image in the retina, and the electrical data of this neural transmission could be read and recorded in a machine. The stored information could then be processed through an artificial optic nerve and played back as visual patterns on a viewscreen. Another of Tesla's theorized inventions is commonly referred to as Tesla's Flying Ma-