English to Russian Tech/Engineering Materials (Plastics, Ceramics, etc.) metamaterials

But although they can bend light, metamaterials cannot make things disappear completely.


“Complete invisibility of macroscopic objects for all visible colours is fundamentally impossible,” says Martin Wegener of the Karlsruhe Institute of Technology in Germany. His team has created cloaks from photonic crystals that work for certain wavelengths, but bending light over the entire spectrum is forbidden by relativity.

“This means that you may see less of something at a particular colour, but see it at all other colours,” says Wegener.

The wearer would be effectively transparent at some wavelengths but not all, rendering them as a coloured shadow or ghost image.

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