Scientists closer to invisibility cloak
Harry Potter's invisibility cloak could soon become real say scientists who have developed a material they say is key to producing the device.
Boffins have invented a new three-dimensional "metamaterial" which reverses the natural direction of light possibly paving the way for invisibility.
The experts from the University of California say the material 'bends' light in much the same way as when looking into a tank of water causing fish to appear in a slightly altered position.
The next step they say is to engineer the material properties in a certain manner and cover someone in it, making them invisible.
Because the material would bend the light looking at someone the cloak you would see exactly what was behind them.
