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Hiding From Magnets Behind a Cloak

September 24, 2011 Leave a comment Go to comments

The magnetic cloak calls a truce on warring magnetic fields. On the left, the magnetic field of a lone cylinder-shaped magnet. In the middle, a second magnet, pointing the opposite way, disrupts its field. On the right, the second magnet's field is hidden in the cloak, which also allows the first magnet's field to extend as if the second weren't there at all. Credit: (illustration) J. Prat-Camps; A. Sanchez, C. Navau, D.-X. Chen/Autonomous U. of Barcelona

“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, a theorist at Imperial College London and co-inventor of the original cloaking idea, who was not involved in the present work.”

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