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New "Scratched Glasses" Give Perfect Vision
Bifocals and trifocals allow people with limited vision to see objects at varying distances, but only by refocusing on the object from a different vantage. A scientist named Zeev Zalevsky responded to...
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Scientists Make Progress Towards Invisibility
British researchers have made progress toward developing materials that are able to bend light around them and render them less visible: Metamaterials work by interrupting and channelling the flow of...
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