Invisibility 'cloak' hides objects by making them seem flat
 

Humanity is still some distance away from a real, honest-to-goodness invisibility cloak, but British scientists are that much closer to making it practical. They've developed a coating that uses graded refractive index nanocomposite materials (just r...

https://www.engadget.com/2016/07/18/...ibility-cloak/