Space/Science » in reply to re: RayTracing in General Relativity

re: RayTracing in General Relativity

Daniel — 2/26/2006 4:45:47 PM (archived)

Hi Fox, yes I believe it is inverted as well as reflected

.. this phenomenon is similar to gravitational lensing. A given light ray, which travels in a straight line in newtonian space, now travels along a 'null geodesic' somewhere within the Schwartzchild spacetime (which the famous funnel-like gravity well shape), and then escapes to us, a safe distance away.

You can get a better explanation at Werner Benger's page - he is one of the pioneers of GR visual simulations. And, if you compare the Newtonian to the Einsteinian simulations, there do seem to be inversions as well as reflections. Why exactly this is so, I'm not sure yet.

NEWTONIAN VERSION:

GR VERSION (large reddish sphere has been removed from pic to simplify)

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The whole thread (21 posts)

• RayTracing in General Relativity: How Einstein would look passing near a black hole - Daniel - 2/25/2006 4:12:27 AM
  • Questions about time dilation and intense gravity of black holes - SDF - 2/26/2006 3:28:09 PM
    • re: Questions about time dilation and intense gravity of black holes - David F Mayer - 2/26/2006 4:05:14 PM
      • Keep that nobel prize handy (my questions were a rhetorical form of persuasion) - SDF - 2/27/2006 2:25:30 PM
        • black holes evaporate over time - Daniel - 2/27/2006 3:51:54 PM
          • just to press the point a bit, even if it's speculative - SDF - 2/28/2006 2:55:52 PM
      • Thanks for that - Daniel - 2/26/2006 4:24:22 PM
  • Is that a 2-dimensional black hole? - SDF - 2/26/2006 2:11:01 PM
    • it's a 3-D Schwartzchild black hole, but the IMAGE is 2-D - Daniel - 2/26/2006 4:33:54 PM
    • Image is passing BEHIND the black hole, not through it. (n/t) - David F Mayer - 2/26/2006 3:55:17 PM
      • I think you mean the OBJECT is passing behind the black hole - Daniel - 2/26/2006 4:23:27 PM
  • re: RayTracing in General Relativity - Fox - 2/25/2006 10:54:57 PM
    • another good GR movie (from around here) - Daniel - 2/27/2006 7:56:06 AM
      • (220 kB download) (n/t) - D. - 2/27/2006 8:19:05 AM
    • re: RayTracing in General Relativity - Daniel - 2/26/2006 4:45:47 PM
      • A Thrill Ride to 'the Other Side of Infinity' - ljk - 2/28/2006 4:20:06 PM
        • Andrew Hamilton - Daniel - 2/28/2006 4:53:39 PM
          • um .. - D. - 2/28/2006 4:58:17 PM
            • See also - ljk - 2/28/2006 5:56:32 PM
              • thanks for that - Daniel - 3/1/2006 12:09:49 PM
                • Evolution of supermassive black holes - ljk - 3/1/2006 7:44:26 PM