Instead of having to find a complex way of bending light waves around an object so it can’t be seen by the human eye, BAE Systems, a UK defense giant, simply proposes to paint objects with a special ink that can change colors on demand.
The whole process uses the same e-ink that is found in e-readers. The object coated with the ink, say a tank for example, can observe the environment it is in and instantly change colors to match its surroundings as it moves. Sure, it wouldn’t really be invisible from up close, but from a distance this would be much more effective then simply painting a tank to match the color of sand or the jungle. This technique could be especially effective in places like Afghanistan, where the terrain can quickly change from desert beige to jungle green.
(Story and image via Engadget)