Scientists at the University of California, Berkeley, led by Xiang Zhang, have demonstrated for the first time they were able to cloak three-dimensional objects using artificially engineered materials that redirect light around the objects. Underlying the work is the idea that bending visible light around an object will hide it.
XiangZhang said: “In the case of invisibility cloaks or shields, the material would need to curve light waves completely around the object like a river flowing around a rock.” The research, which was heavily funded by the military, will be published in two journals, Nature and Science, later this week.
People can see objects because they scatter the light that strikes them, reflecting some of it back to the eye. Cloaking uses materials, known as metamaterials, to deflect radar, light or other waves around an object, like water flowing around a smooth rock in a stream.
So, to me, the real question is what would YOU use an invisible cloak for? Rob a bank? Peek in on your neighbors? Leave me a comment and tell me what your first act would be if you had an invisible cloak.
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