
Stephen Hawking Repeats Assertion that Time Travel and negative energy density a
Date: Tuesday, September 14, 2010 @ 21:03:17 UTC Topic: Science
Stephen Hawking Repeats Assertion that Time Travel and negative energy density are possible and Dr. Richard Mallet Plans a Light Enabled Time Machine
Quantum Theory allows the energy density to be negative in some places, provided it is positive in others. The reason Quantum Theory can allow the energy density to be negative, is that it is based on the Uncertainty Principle.
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