A light delay
New kind of trap can hold light for 1.5 seconds
By Stephen Ornes, 00:00 AM January 12, 2010
Researchers stored yellow light for more than a second, by means of an imprint left in some of the atoms (dark blue) in a cloud of ultracold sodium atoms (gray). The beam that emerges (bottom) has the same properties but is weaker than the original beam (
It’s easy to imagine catching a ball, holding it for a moment and then throwing it in the air again. It’s also easy to imagine scooping up a handful of water — say, from the ocean — and then releasing it again. But what about li...
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