Video of "invisibility cloak" at TED


22 Responses to “Video of "invisibility cloak" at TED”

  1. Brainspore says:

    The video was hosted by Dropbox, which killed the link (too much traffic).

    The video is still there, we just can’t see it.

  2. awjt says:

    OK, does the invisibility cloak only work on the bottom 5% of the sandwiched crystals?  Does it require the stripey background?  Does it require a certain surface to rest on?

    • rrh says:

      I’m going to bet that yes, it requires the stripey background. Otherwise, what’s the first thing you’d do to demonstrate something’s invisible? You wave your hand (or tweezers) behind it.

      • robuluz says:

        That’s going to impede tactical deployment a little. The 20 mile wide, 4 mile high stripy backdrop will be a tip off, but once they roll in the 2 mile high prism and then stand around whistling casually, the enemy will start to get suspicious.

  3. I want a little periscope like that!

  4. Roger Mercer says:

    And suddenly it’s not so magical. Looks like it wouldn’t work without the vertically homogenous background. 

  5. Looks like Lubor’s Lens. Magicians have had this technology for a while now.

  6. secretdoubleagent says:

    Yay!  I personally can’t think of a single practical use for an invisibility cube that isn’t somewhere on the high jinks–trouble-making–law breaking–other unsocial behaviors spectrum.  Also, of course, military stuff.  But that might say more about me than invisibility cubes.

  7. Aaron Swain says:

    The big question is: can you still fire phasers and photon torpedoes while using it?

  8. theSamLowry says:

    This video is very unconvincing.

  9. Rhyolite says:

    This is photographed from one direction…how well does it work if you are off of the intended axis?

  10. danegeld says:

    yeah, this works only on one direction, the background image is offset and the vertical stripes are needed to hide that fact. There are 360˚ invisibility metamaterials that work in the microwave regime, but you need materials with n < 0 to get it to work

  11. JohnQPublic says:

    maybe these will work for tiny drones

  12. Gasface says:

    I hold the patent for making things invisible from only certain angles, when can I sue?

  13. MrQuagmire says:

    What is this, an invisibility cloak for ants?

  14. Blue Ninja says:

    So I told my Mom about this the other day (she’s in her 60′s). I said, “They’ve invented an invisibility cloak.” She asked, “Who did?” I said, “Scientists.” And she asked in all seriousness, “Are they Romulans?”

    I love my Mom.

  15. brainflakes says:

    That’s not an invisibility cloak, that’s just a piece of perspex! All it’s doing is reflecting the vertical bars due to total internal reflection, it’s the “invisibility” equivalent of placing that orange strip under a slightly angled mirror.

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