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arclein

But one of those physical limits may have just been stretched: heat loss. Nanosize crystals of semiconducting material, in this case a mixture of lead and selenium, move electrons fast enough to channel some of them faster than they can be lost as he

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arclein

Here’s how it works. Each strand of the curtain’s yarn consists of a central stretchy fiber, with a more rigid fiber wound around the outside of it. When put under strain, the rigid outer fiber straightens, squeezing the stretchy inner fiber and caus

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