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8/18/2553

Worm Holes





     A wormhole is a pathway from one part of space and time to another more distant location. You might think of it as a shortcut through space that saves you from having to travel the normal distance between two points.



Theory

     A worm hole is a mathematical solution to Einstein's relativistic equation for gravity in which two parts of space-time may be joined together. Unlike black holes, they have no singularities at least in the 'vacuum solution', but certain rotating 'Kerr-Nordstrom' black holes may serve the same worm hole-like function.









     Many science fiction authors like to use them to allow spacecraft to travel quickly from place to place in our universe. But all of these ideas are based on 'pure math' descriptions of how they might work, and as you know, nature is often much messier than any idealistic, abstract rendering of it. There are no perfectly straight lines in the universe, and there are not likely to be wormholes either.









 
A brief history of wormholes



      The theory of wormholes goes back to 1916, shortly after Einstein published his general theory, when Ludwig Flamm, an obscure Austrian physicist, looked at the simplest possible solution of Einstein's field equations, known as the Schwarzschild solution (or Schwarzschild metric). This describes the gravitational field around a spherically-symmetric non-rotating mass. If the mass is sufficiently compact, the solution describes a particular form of the phenomenon now called a black hole – the Schwarzschild black hole. Flamm realized that Einstein's equations allowed a second solution, now known as a white hole, and that the two solutions,




        In 1935, Einstein and Nathan Rosen further explored, it can be appreciated with hindsight, the theory of intra- or inter-universe connections in a paper2 whose actual purpose was to try to explain fundamental particles, such as electrons, in terms of spacetime tunnels threaded by electric lines of force. Their work gave rise to the formal name Einstein-Rosen bridge for what the physicist John Wheeler would later call a "wormhole." Wheeler's 1955 paper3 discusses wormholes in terms of topological entities called geons and, incidentally, provides the first (now familiar) diagram of a wormhole as a tunnel connecting two openings in different regions of spacetime.




                                  Form of Worm Hole



Credit : daviddarling

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