The naughty list: Tech CEOs getting coal for Christmas
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Researchers demonstrate flat lenses with focusing power that adjusts based on what the person is viewing.
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switchable liquid crystal diffractive lenses
Researchers at the University of Arizona have demonstrated eyeglass lenses, or what's called switchable liquid crystal diffractive lenses, that could potentially replace biofocals for far-sighted people. The flat lenses have focusing power that adjusts based on what the person is viewing.
Caption by: Bill Detwiler
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