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Physicists at Harvard succeeded in capturing a light pulse by beaming it into an extremely cold cloud of sodium atoms; they then transferred some of the atoms into another cloud and shot it with a laser beam, whereupon the light pulse reappeared.

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Physicists at Harvard succeeded in capturing a light pulse by beaming it into an extremely cold cloud of sodium atoms; they then transferred some of the atoms into another cloud and shot it with a laser beam, whereupon the light pulse reappeared.

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