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Science

Submission + - Ray tracing enables first real time travel movies (newscientist.com)

CelestialScience writes: What does time travel look like? Hollywood has struggled with the question for decades but it is physicists who have now made the first movies of what a voyage to the past would actually look like. The visualisations are surreal, the result of the shape of a hypothetical universe in which time travel is possible. They might help us understand the origins of causality, which is still shrouded in mystery, and pave the way to physical, table-top models of time travel. Wolfgang Schleich and his team at the University of Ulm, Germany made the films via ray tracing, a computer graphics technique. The movies may have practical applications, such as aiding the interpretation of light rays from ancient galaxies that are only now reaching our telescopes. You have to register to read the story at New Scientist, but you can watch the video here.
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Ray tracing enables first real time travel movies

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