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Turning a sphere inside-out

December 14, 2009

Rocky thanks his daughter for finding this strange and interesting video about turning spheres inside-out without puncturing them.

Warning: Only click on the video if you like math puzzles.

  1. ld
    December 17, 2009 at 12:29 pm

    This was cool!!!

  2. December 17, 2009 at 5:51 pm

    Just bizarre. I watched a couple of the videos, but I haven’t gottent to the point where they show how they invert the sphere, though I think I have the idea. But I wonder what the point is? I mean it’s all very Alice-In-Wonderland-y. Hmmm, given the pervasive success of Alice, maybe that’s all we need.

  3. December 18, 2009 at 3:04 pm

    LD – Yes, indeed!

    Pergy- Thanks for visiting the blog and commenting. To answer your question, the puzzle shows that one needs to obey the rules — even in an entirely theoretical world — or one’s toys get taken away. If you like bizarre, check this out (another recommendation from Rocky’s daughter): http://www.youtube.com/watch?v=Q5im0Ssyyus

  4. December 18, 2009 at 9:53 pm

    I can’t get the sphere video for some reason…but Charlie the Unicorn will puzzle me for days.

  5. December 19, 2009 at 8:24 am

    Fakename: note that Charlie the Unicorn has been viewd more than 43,000,000 times. He’s a national icon of sorts! What do you think is his deep INNER meaning?

  6. December 19, 2009 at 10:54 am

    Inner meaning–that is the puzzle, isn’t it? I just watched the sphere video (Parts 1 and 2), and my brain is hurting. When you start with “the material has to be able to pass through itself”…uh, well…On the other hand, there is gaseous material which… I wonder if we could turn Jupiter inside out as a demonstration. Ouch. Where is the Ibuprofen bottle?

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