A new device developed at Caltech uses one beam of light to redirect another in only 74 femtoseconds, or 74 quadrillionths of a second, roughly the time light takes to cross a human hair.
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A new device developed at Caltech uses one beam of light to redirect another in only 74 femtoseconds, or 74 quadrillionths of a second, roughly the time light takes to cross a human hair.
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