Researchers Find Invisibility Possible

Engineers at Purdue foresee a time when it will be possible to become “invisible” with the use of a type of wizard’s cloak. Although it is still a concept, the idea is to surround an object with a cone that has metal needles sticking out. The refraction of the cone is then changed so that anything inside seems to disappear. Unfortunately, only one wavelength at a time can be bent, so the person inside must be dressed head-to-toe in a body suit. Think of it as a backwards green screen used in filmmaking. Lead researcher Vladimir Shalaev feels that a working prototype will become available in the next couple of years.

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