terça-feira, março 18, 2003

L.A.S.E.R. que esfria?

... Edwards had already won a virtuoso's reputation at Los Alamos for thinking differently. Many told Edwards that his idea for an optical refrigerator - which keeps machines from overheating by using lasers to cool a specialized form of glass - defied the laws of thermodynamics. The concept had been around since the 1920s, but previous lasers only melted the glass. Edwards' team developed a precisely tuned beam that, paradoxically, absorbed the heat it produced and more. After two years of work, they created a prototype, beating other researchers, including a Nobel physicist, to the punch.

From: W I R E D

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