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Smaller,but Larger?

  1. Oct 9, 2013 #1
    Smaller,but Larger??

    You may have a look at the attachments,which are the key parts of my problem.
    And the full text is here:http://arxiv.org/pdf/gr-qc/9905084v5.pdf
    How to understand "The outermost surface of the warp bubble will have an area corresponding to a radius of approximately 3×10−15 m, while the inner diameter of the ‘pocket’ is 200m."??Something about higher dimensions???
    two circles.png

    why.png
     
  2. jcsd
  3. Oct 9, 2013 #2
    Well, it is a warp bubble, isn't it?
     
  4. Oct 10, 2013 #3
    yes,it is.
     
  5. Oct 10, 2013 #4
    So, why are you surprised? space is not Euclidean (by design).
     
  6. Oct 10, 2013 #5

    HallsofIvy

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    "By design"? Who designed it?
     
  7. Oct 10, 2013 #6
    From the article:
    So it's like a balloon with the hole for inflating it being the part that interfaces to our normal universe.
    This would not be my favorite method of transportation - even if I was late for work.
     
  8. Oct 10, 2013 #7

    Dale

    Staff: Mentor

  9. Oct 11, 2013 #8
  10. Oct 11, 2013 #9
    I'm not saying this is crackpotery, but maybe there could be another category for this kind of stuff, like "Star Trek Science".
     
  11. Oct 12, 2013 #10
    So you mean the expanding spatial volume has something to do with higher or extra dimensions ? And what is your favorite method of transportation?
     
    Last edited: Oct 12, 2013
  12. Oct 12, 2013 #11

    ZapperZ

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    Do you have an exact reference on where this was published? An Arxix-only upload from 1999 sounds dubious.

    Zz.
     
  13. Oct 12, 2013 #12

    Bill_K

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    According to Inspire, it was published in Class.Quant.Grav. 16 (1999) 3973-3979
     
  14. Oct 12, 2013 #13

    ZapperZ

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    Thanks. One can now do citation index. :)

    Zz.
     
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