Originally posted by notsoperfect
reply to post by BlackPoison94
You can try to quantize general relativity to see if there is anything new. But quantum theory and general relativity has been proven to be incompatible. The integrated theory of quantum field theory and general relativity which is called quantum gravity has been known to be divergent meaning that it is not renormalizable. If you can't renormalize a quantum field theory, its prediction will be nonsensical. This is where the modern gravitational physics stands.
Time travel of physical body is a myth. Never been proven either theoretically or physically.
With a brilliant idea and equations based on Einstein’s relativity theories, Ronald Mallett from the University of Connecticut has devised an experiment to observe a time traveling neutron in a circulating light beam. While his team still needs funding for the project, Mallett calculates that the possibility of time travel using this method could be verified within a decade.
Tipler Cylinder and Light
Take a piece of material 10xthe mass of the Sun, roll it into a thing, long, dense cylinder and start spinning it to a few billion revolutions per minute. Taaaaaadaaaaaa....you can time travel! The Tipler Cylinder is based upon Einstein’s GR...that a rotation of matter causes a distorting in space-time. This distortion can actually TWIST time around a rotating cylinder. With the right amount of mass and speed, a CTC can be created..and therefore you can time travel.
A rotor ship, or Flettner ship, is a ship designed to use the Magnus effect for propulsion. To take advantage of this effect, it uses rotorsails which are powered by an engine. The Magnus effect is a force acting on a spinning body in a moving airstream, which acts perpendicularly to the direction of the airstream. German engineer Anton Flettner was the first to build a ship which attempted to tap this force for propulsion.
Flettner's spinning bodies were vertical cylinders; the basic idea was to use the Magnus effect. The idea worked, but the propulsion force generated was less than the motor would have generated if it had been connected to a standard marine propeller. These types of propulsion cylinders are now commonly called Flettner rotors. His first idea was to produce the propulsion force by using a belt running round two cylinders. Later Flettner decided that the cylinders would be better rotated by individual motors. Flettner applied for a German patent for the rotor ship on 16 September 1922. Assisted by Albert Betz, Jacob Ackeret and Ludwig Prandtl, Flettner constructed an experimental rotor vessel, and in October 1924 the Germaniawerft finished construction of a large two-rotor ship named Buckau. The vessel was a refitted schooner which carried two cylinders (or rotors) about 15 metres (50 ft) high, and 3 metres (10 ft) in diameter, driven by an electric propulsion system of 50 hp (37 kW) power.