Invisibility cloak leaves the realm of magic at last
HIDING objects inside a cloak that channels light around them to make it look as if they aren't there may soon be possible thanks to a breakthrough idea by materials scientists.
It raises the prospect of invisibility shields that could hide objects sitting right under your nose.
Objects are visible simply because light scatters off their surfaces and into your eyes. So in theory, a cloaking device could work by steering light around an object so that you see only the light from behind it, and not the object itself.
Now John Pendry, a theoretical physicist at Imperial College London, and his colleagues have worked out how this could be done with a spherical cloak that channels light around an object hidden at its centre.
FLASHBACK: Alienation News May, 2004: On the battlefield, an invisibility cloak could be just the ticket. Straight out of a Harry Potter adventure, the cloak is covered with tiny light-reflective beads. It appears to be transparent as it's fitted with cameras which project what is in front of the wearer onto the back of the cloak, and vice versa.
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