So when do I get my cloaking device? Harry Potter, here I come!
But within five years there might be devices powerful enough to make whole vehicles "vanish" - including battlefield tanks.
An invisibility cloak blueprint was produced in May by Professor Sir John Pendry, a physicist at Imperial College London.
Just five months later, scientists working with him in the US have put the idea into practice.
The concept involves bending visible light, or other forms of electromagnetic radiation such as radar, around the object being hidden.
An observer looking at the cloaked object will see light deflected from behind, making it seem to disappear.
Invisible to radar today, to light in 5 years? Wow!
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