All sorts of funky possibilities, including time travel, have been raised by the finding that light can be accelerated up to 300 times its usual speed. (Thanks to Drudge for the link.) An excerpt from the news report:
Before the pulse had fully entered the chamber it had gone right through it and travelled a further 60ft across the laboratory. In effect it existed in two places at once, a phenomenon that Wang explains by saying it travelled 300 times faster than light.*BAM* That just blew my mind. Of course, there are more mundane possibilities for this knowledge, including really, really fast optics for computers and networks.
The research is already causing controversy among physicists. What bothers them is that if light could travel forward in time it could carry information. This would breach one of the basic principles in physics - causality, which says that a cause must come before an effect. It would also shatter Einstein's theory of relativity since it depends in part on the speed of light being unbreachable.
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