The pi thread

Discussion in 'Physics & Math' started by James R, Oct 4, 2018.

  1. cluelusshusbund + Public Dilemma + Valued Senior Member

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    6,870
    Yes it is a perfect shark... but what does the reverse image look like to you.???

    O contraire.!!!
     
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  3. DaveC426913 Valued Senior Member

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    OK, you're also using the quote feature wrong.

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    You cannot know you're not being fooled, until and unless you can actually see the image.

    [ EDIT ] Better.

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  5. DaveC426913 Valued Senior Member

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    There is no reverse picture.
    I mean, you can force yourself to view the stereogram incorrectly, and you will get funny artifacts, but that's an error, not intentional.
     
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  7. cluelusshusbund + Public Dilemma + Valued Senior Member

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    Gonna be out of town wit-out my chromebook for about 5 days an leavin kinda early in the mornin so will be goin to bed soon... so if nobody is able to see the 3 D effect in the image i posted perty soon i will have to wait until i get back from my trip to see who saw it first.!!!
     
  8. cluelusshusbund + Public Dilemma + Valued Senior Member

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    6,870
    Ok... not a reverse image... but the other image i saw is a 3 D effect an just as clear as the shark.!!!
     
  9. cluelusshusbund + Public Dilemma + Valued Senior Member

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    6,870
    Yes i fixed a couple of incorect quotes... an my "O contraire" still stands

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  10. James R Just this guy, you know? Staff Member

    Messages:
    31,547
    You need to use the wall-eye viewing method for the best effect, though. If you do it cross-eyed then you see a shark-shaped cavity embedded into a solid block.
     
  11. TheFrogger Registered Senior Member

    Messages:
    962
    Cannot see it. Until I can see it I'm sayin' dares nuttin dare. ☺
     
  12. sculptor Valued Senior Member

    Messages:
    5,360
    I see what looks like a woven fabric
     
  13. sculptor Valued Senior Member

    Messages:
    5,360
    3.14159265358979323846264338327950288419716939937510
    58209749445923078164062862089986280348253421170679
    82148086513282306647093844609550582231725359408128
    48111745028410270193852110555964462294895493038196
    44288109756659334461284756482337867831652712019091
    45648566923460348610454326648213393607260249141273
    72458700660631558817488152092096282925409171536436
    78925903600113305305488204665213841469519415116094
    33057270365759591953092186117381932611793105118548
    07446237996274956735188575272489122793818301194912
    98336733624406566430860213949463952247371907021798
    60943702770539217176293176752384674818467669405132
    00056812714526356082778577134275778960917363717872
    14684409012249534301465495853710507922796892589235
    42019956112129021960864034418159813629774771309960
    51870721134999999837297804995105973173281609631859
    50244594553469083026425223082533446850352619311881
    71010003137838752886587533208381420617177669147303
    59825349042875546873115956286388235378759375195778
    18577805321712268066130019278766111959092164201989

    At least, using base 10, all pattern/repetition seen in pi is, most likely, an illusion.
    perhaps using a different base?
     
  14. DaveC426913 Valued Senior Member

    Messages:
    9,438
    Which one?

    I can see the ones I posted, as can others. Since we agree, that's a pretty strong indication that we're seeing the right thing, and that you're simply unable to see it just yet.


    This is what happens when you start subtracting out the differences in the repetitive background noise:

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    I can't do the whole thing because I don't have a clean sample of the background.


    Contrast with Clueless's, for which - so far - no one has been able to make out any cogent image - let alone 2 people corroborating it.

    Additionally, what little bit of analysis I did suggests that either there is no image, or it is an "expert level" stereogram.

    This is what happens when I do the same analysis n Clueless' image:

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    I get ... more noise.
    Not even a hint of structure.

    @cluelesshusband: now I am curious as to where exactly you got that image. Source?
     
    Last edited: Oct 12, 2018 at 11:53 PM
  15. DaveC426913 Valued Senior Member

    Messages:
    9,438
    See post 14.
     
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  16. DaveC426913 Valued Senior Member

    Messages:
    9,438
    I am muuuuuch better at wall-eyed than cross-eyed. I'l bet most people are.
    It is far easier to relax my eyes than to scrinch them so hard that they cross.
     
  17. Neddy Bate Valued Senior Member

    Messages:
    1,708
    For all these types of stereograms, I have only ever been able to see the cross-eyed view. I never even knew about the wall-eyed view until this thread. For example, on the shark one, I can only see a shark-shaped cavity embedded into a solid block.
     
  18. DaveC426913 Valued Senior Member

    Messages:
    9,438
    The trick, for me, is to imagine that I am looking through the screen at the wall behind it. This causes my sight lines to separate to more parallel than when focussing on a nearby object.
     
  19. James R Just this guy, you know? Staff Member

    Messages:
    31,547
    I find the wall-eye method much easier. Here's what I do to get the cross-eyed version:

    Hold up your index finger between your eyes and the screen. Focus on the tip of the finger (NOT the screen). Slowly move the finger towards or away from you until the image starts to pop out.
     
  20. Beaconator Registered Senior Member

    Messages:
    460

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