Tuesday, August 04, 2009
Scientist at Work - Stephen Kurtin - Making Eyeglasses With a Mechanically Adjustable Focus - NYTimes.com
Scientist at Work - Stephen Kurtin - Making Eyeglasses With a Mechanically Adjustable Focus - NYTimes.com: "The glasses have a tiny adjustable slider on the bridge of the frame that makes it possible to focus alternately on the page of a book, a computer screen or a mountain range in the distance."
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