October 20, 2006 A team led by scientists at Duke University's Pratt School of Engineering has demonstrated the first working "invisibility cloak." Now before you get all excited about the prospects of playing the invisible man or Harry Potter, it’s not a Dr Zhivago sort of cloak but an electromagnetic radiation cloaking device and we’re many years from being able to turn an object or person invisible to the naked eye. The cloak deflects microwave beams so they flow around a "hidden" object inside with little distortion, making it appear almost as if nothing were there at all. Cloaks that render objects essentially invisible to microwaves could have a variety of wireless communications or radar applications, according to the researchers. Watch the video.