Invisibility graduates from science fiction to science

Scientists at the Karlsruhe Institute of Technology in Germany have used specific light wavelengths to render an object completely invisible.

'The trick is to change the speed and direction in which light travels through the material - that is, to change the material's refractive index.' So far this was possible in 2D but this seems to be the first time ever that 3D invisibility is technically possible.

The Karlsruhe team have managed to render invisible a miniscule bump one micrometre high, so the Invisible Man will remain a fictional character for a while yet.

Source: BBC

Polymer crystals made of microscopic rods control the direction of light rays to achieve invisibility