Scientists create invisibility cloak and make a paperclip disappear

Scientists create invisibility cloak and make a paperclip disappear
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3 February 2011 : A paperclip disappears from view behind a special piece of crystal, showing only the object in the background : an ornamental panda bear.Invisibilité: Des chercheurs progressent et font disparaître un trombone.Le Dr Shuang Zhang et se

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