Pour faire une cape d'invisibilité, mangez des lentilles !

=)

Joli effet d'optique que Léna saura certainement m'expliquer ;)

Source:

'Cloaking' device uses ordinary lenses to hide objects across range of angles


A multidirectional `perfect paraxial’ cloak using four lenses. From a continuous range of viewing angles, the hand remains cloaked, and the grids seen through the device match the background on the wall (about 2 m away), in color, spacing, shifts, and magnification. Credit: J. Adam Fenster / University of Rochester

phys.org

La vidéo:

Crédits: 25 sept. 2014

For a more detailed description of how this device works, watch: https://www.youtube.com/watch?v=vtKBz...

If you're a fan of Harry Potter or Star Trek, you probably already know what cloaking devices do. In the world of science fiction, they can make things disappear, just like magic. But how does cloaking work in the real world?

It can often be a very complicated setup that involves a lot of math and specialized optics, but researchers at the University of Rochester have been working on simplifying that approach.

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