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The sneaky science of 'cloaking' just keeps getting richer. Physicists and engineers had already demonstrated rudimentary invisibility cloaks that can hide objects from light, sound, and water waves.

"Physicists Devise Perfect Magnetic Shield" Science 

"The sneaky science of 'cloaking' just keeps getting richer. Physicists and engineers had already demonstrated rudimentary invisibility cloaks that can hide objects from light, sound, and water waves. Now, they've devised an 'antimagnet' cloak that can shield an object from a constant magnetic field without disturbing that field. If realized, such a cloak could have medical applications, researchers say. 'This will take cloaking technology another step forward,' says John Pendry [Physics], a theorist at ÌìÃÀ´«Ã½ and co-inventor of the original cloaking idea, who was not involved in the present work."