By
Alex in
Science & Tech on Oct 21, 2006 at 12:37 am
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From the website:
A US-British team of scientists has successfully tested a cloak of invisibility in the laboratory.
The device mostly hid a small copper cylinder from microwaves in tests at Duke University, North Carolina.
It works by deflecting the microwaves around the object and restoring them on the other side, as if they had passed through empty space.
The cloak consists of 10 fibreglass rings covered with copper elements and is classed as a "metamaterial" – an artificial composite that can be engineered to produce a desired change in the direction of electromagnetic waves.
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