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Tech & Math

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At a wearer’s command, an electric current can switch these sunglasses from dark to clear in about a second. 

scleral contact lens

This contact lens (right), about the size of a U.S. quarter, can magnify a wearer’s vision 2.8 times. Such lenses would let a patient switch, in the wink of the eye, between normal and magnified vision.

Intelligent keyboard

Zhong Lin Wang (left) and Jun Chen (right) of Georgia Tech show their team’s new self-powered keyboard, which can lock out unauthorized users. 

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