From the "I Barely Understand What the Heck They're Talking About" department comes this story from PhysOrg.com about Professor Ronald Mallett from the University of Connecticut who is positing a time machine based on circulating laser beams and has devised an experiment to test it.
Instead of relying on super-massive objects like black holes, Mallett theorizes that since energy and mass are the same thing, light could be used to warp or loop time.
"Say you have a cup of coffee and a spoon," Mallett explained. “The coffee is empty space, and the spoon is the circulating light beam. When you stir the coffee with the spoon, the coffee – or the empty space – gets twisted. Suppose you drop a sugar cube in the coffee. If empty space were twisting, you'd be able to detect it by observing a subatomic particle moving around in the space."
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