You know how a princess can feel a pea through 20 mattresses and 20 feather beds? Well, not any more. Researchers in Germany have created the first mechanical invisibility cloak. When this cloak is ...
WASHINGTON, April 19–Invisibility cloaks are seemingly futuristic devices capable of concealing very small objects by bending and channeling light around them. Until now, however, cloaking techniques ...
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