Physicist makes real-life invisibility cloak just for fun

Baile Zhang, assistant professor of physics at Nanyang Technological University in Singapore, unveiled the above “invisibility cloak” earlier this week at TED2013. Before the freak-out starts, we should say that it’s nothing at all like Harry Potter’s similarly named device. The cloak certainly isn’t very cloak-like, but then again, calling it a tiny box of invisibility wouldn’t really ignite passionate feelings of OH MY GOD. Zhang says he created the cloak just for fun and says it is made out of two pieces of optical crystals that, when brought together, bend light and suppress shadows, giving the illusion of nothingness. Above, watch as Zhang places the cloak over a rolled up pink Post-it note, and then watch that Post-it note disappear. [Source]

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