Harry Potter-style invisibility cloaks: A real possibility next Christmas?
Forget socks and shaving foam, the big kids of tomorrow want an invisible cloak for ChristmasMums and Dads beware, next year’s Christmas wish list could be more out of reach (or sight…) than ever before. Invisibility, a long sought-after speculation in science fiction, has been turned into reality in the laboratory through the use of a theoretical technique called Transformation Optics. In his article, ‘Transformation optics and cloaking’ , Martin McCall, Professor of Theoretical Optics at Imperial College London, describes how the scientific principles leading to