The end of the elastic range for metallic glasses is governed by the onset of plastic flow rather than cracking. The onset of plastic flow must be facilitated, on the concave surface of the beam ...

A team in Japan has developed sensors that allow the camera to differentiate between usual blinking and a purposeful ... for people who wear glasses. The Blincam is a camera that attaches to ...

Glasses used to be made of glass. Now, most are made of plastic. Plastic lenses are lighter and can be treated with coatings to protect your eyes. But plastic is more likely to scratch than glass.

Eye strain is simply caused by blinking ... plastic-framed blue light blockers can tend to feel overly chunky and heavy. These dainty wire frames will make you forget they're on your face. “The ...