Harry Potter, Invisibility Cloak | featured news

This invisibility cloak is thinner than anything in Harry Potter's closet

Invisibility Cloak - NBC News

If you liked last year's bulky invisibility cloaks, you'll love this year's fashionable ultra-thin invisibility wrap — which is just a tenth of a millimeter thick but can still make the objects inside undetectable to microwave scans."This is the first time an ultra-thin cloak has been realized, much thinner than the wavelength," Andrea Alu, a materials-science researcher at the University of Texas...

 

Now you see it, now you don't: Time cloak created

Time Cloak

It's one thing to make an object invisible, like Harry Potter's mythical cloak. But scientists have made an entire event impossible to see. They have invented a time masker. Think of it as an art heist that takes place before your eyes and surveillance cameras. You don't see the thief strolling into the museum, taking the painting down or walking away, but he did. It's not just that the thief is invisible - his whole activity is.

Senh: This is an interesting approach. Slowing down light, so something can happen before it reaches our eyes. This seems like the most elegant solution, but it's probably way too difficult to do practically.

 

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