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Turning a sphere inside out (video)

  1. Mar 23, 2008 #1
    Some of you guys have probably seen this before, but I thought this was really interesting:

    http://video.google.com/videoplay?docid=-6626464599825291409 [Broken]
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Mar 23, 2008 #2
    HORRIBLE voice acting, but really cool stuff nonetheless.
  4. Mar 23, 2008 #3
    This is for you smart math number theory working at NSA people.
  5. Mar 23, 2008 #4
    That's pretty amazing. I wonder if it would be possible to work out how to do it for n dimensions 3=>. Those crazy pure maths cats. :smile:

    I wonder if you could reduce the time by using extra dimensions. I wonder if you could prove that you can?
    Last edited: Mar 23, 2008
  6. Mar 23, 2008 #5
    what does this have to do with number theory :confused:
  7. Mar 23, 2008 #6
    Dont people who do number theory crack codes at the NSA?
  8. Mar 23, 2008 #7
    That's topology on steroids.
  9. Mar 23, 2008 #8


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    Hmph. It is utterly incomprehensible with the audio off.
  10. Mar 23, 2008 #9
    hahaha what do you expect?
  11. Mar 23, 2008 #10
    I was expressing myself so much that things got worse somewhere along the microphone plugin

    I seriously don't know what was-is going on
  12. May 3, 2008 #11
    Believe it or not a sphere eversion video (the optiverse i think it was called) was actually one of the reasons I became interested in math in the first place.
  13. May 3, 2008 #12
    I wonder what kind of real-world applications sphere-eversion has...
  14. May 3, 2008 #13
    This would make a good action movie. The music is fitting. :rofl: All it needs is maybe an antagonist (any ideas?) and some romance between the narrators and its good to go.
  15. May 3, 2008 #14


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    i was enjoying it, although getting impatient with the pacing, until the narrator said the euler characteristic of a sphere equals 1, instead of the correct number, 2.

    but i was learning something.

    or maybe they were using a modification of the euler number, involving the coloring of the domes and bowls, to make it come out 1.
  16. May 3, 2008 #15
    Well, is the 'sphere' part of this very useful in the real world as it has so many real world applications?--:confused:--

    Now, I can see why those being more pure mathematicians invented string theory and MWI, and have promoted it;-- and, why it hasn't been worked on experimentally in the labs.

    :rolleyes: (nice cgi animations, though, for the 'explanation')
  17. May 3, 2008 #16
    I was just watching that the other day. It's a little slow at times, but not too bad overall.
  18. May 5, 2008 #17
    That wasn't the Euler number, was it?
  19. May 5, 2008 #18


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    Wow. Seeing it the first time is mind boggling. What makes it even more amazing is the fact that this was first worked out on paper.
    Does anybody know if there's a formal way of "ruffling" the surface of the sphere? Are there any simpler ways of doing it?
  20. May 5, 2008 #19
    ::Sarcasm Alert::

    Believe it or not leading string theorists believe our universe is a giant sphere and at the nodes of intersection between two parts of the sphere are black holes.

    ::/End Sarcasm::

    Does it need an application?
  21. May 6, 2008 #20
    That was so cool to watch. This was actually my first time of ever hearing about it, let alone watching it. I enjoyed it though, and learned some too :)
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