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Now you see it, now you don't:
cloaking device is not just sci-fi The Guardian May 3, 2006 ************************* Mathematicians claim to have worked out how to make a cloaking device to render objects invisible at certain frequencies of light. The cloaking device relies on recently discovered materials that have a negative refractive index, which effectively makes light travel... http://www.kurzweilai.net/email/newsRedirect.html?newsID=5522&m=21306
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