Bloomberg: Harry Potter's Invisibility Cloak Is Possible, Studies Say---
May 26 (Bloomberg) -- The creation of an invisibility cloak like the one used by Harry Potter in J.K. Rowling's books is theoretically possible, scientists said in two studies published by the online Science Express journal.Technorati Tags: Harry Potter, Invisibility Cloak, Duke,
The key to making an object invisible is to surround it with a cloak made of ``metamaterials'' that are engineered to bend light around an object, continuing on the other side in the same direction as before, Ulf Leonhardt, author of one of the studies, said in a telephone interview. Sound waves, which have a longer wavelength than light, can be distorted in such a way, and light bends naturally in mirages, for instance, he said.
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The two Duke scientists are now working on building the proposed material, and the first device would be a few millimeters across, according to Imperial College. When built, a final theoretical device would have just the same effects as the magical cloak in J.K. Rowling's books, the British school said.
``Just as in the Harry Potter film, nobody would be able to see an object if it was cloaked, as it's in a spacewarp, and that's exactly what our stuff would do,'' Pendry said.