Invisibility cloak 'step closer'
For now, the invisibility cloak remains a thing of science fiction
Scientists in the US say they are a step closer to developing materials that could render people invisible.
Researchers at the University of California in Berkeley have developed a material that can bend light around 3D objects making them "disappear".
The materials do not occur naturally but have been created on a nano scale, measured in billionths of a metre.
The team says the principles could one day be scaled up to make invisibility cloaks large enough to hide people.
BBC NEWS | Science/Nature | Invisibility cloak 'step closer'
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