Two pairs of specs in one: Touch of finger changes prescription

If you're over 45 and wear glasses, you've probably got more than one pair. Or you're using bifocals or progressive lenses. As most people get older, their eyes have more trouble focusing on objects that are close, which ...

The worlds smallest 3D HD display

(PhysOrg.com) -- It seems like small displays are all of the rage these days, and they just keep getting more and more advanced. In October of last year Ortus Technology created a 4.8-inch liquid crystal display that showed ...

Silicon can be made to melt in reverse

Like an ice cube on a warm day, most materials melt -- that is, change from a solid to a liquid state -- as they get warmer. But a few oddball materials do the reverse: They melt as they get cooler. Now a team of researchers ...

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