Where passive cloaks have all been incredibly bulky and not all that effective, an active cloak can be thinner, more flexible, and capable of cloaking a much wider range of frequencies.

Manager Emma Angel said she was "delighted" to have found the cloak during their annual stock take ... so that we do not inadvertently let a party-goer show up to a raucous fancy dress party in any ...

The UT Austin cloak would achieve this goal by being active and electrically powered, rather than dumb and passive like existing invisibility cloaks. By Sebastian Anthony November 11, 2013 Share ...