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Thread: mind & mirrors (puzzle)

  1. #1
    Flashaholic paxxus's Avatar
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    Default mind & mirrors (puzzle)

    Here's a little puzzle I stumbled across that I thought appropriate for this forum:

    "Why does a mirror reverse left and right, but not up and down?"

    Now, before dismissing it, think about it some more. Why does the mirror flip the scene along one axis but not the other? Does the mirror somehow know what is up and down...?

  2. #2
    Flashaholic* ACMarina's Avatar
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    Default Re: mind & mirrors (puzzle)

    Because it doesn't? It's your perception that's flipped..
    I love my Al-PD

  3. #3
    Retired Administrator Norm's Avatar
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    Default Re: mind & mirrors (puzzle)

    As ACMarina stated, it doesn't flip left and right.
    From here http://answers.google.com/answers/threadview?id=226025
    "Why does a mirror reverse left and right, but not top and bottom?"

    It doesn't.

    The mirror reverses front and back, not left and right (nor top and
    bottom).

    We are accustomed to having someone or something which is facing away
    from us "turn around" to see the front (instead of the back). It is
    actually the act of turning around which reverses left and right. The
    mirror faithfully puts the left on the left and the right on the
    right, which has come to seem "backwards" to us; we "expect" the left
    to be on the right and conversely.

    Perhaps if we customarily flipped upside down to face one another
    (instead of turning around), our perception of the mirror image might
    be that it "reverses up and down".

    regards, mathtalk-ga

  4. #4
    Flashaholic paxxus's Avatar
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    Default Re: mind & mirrors (puzzle)

    Oh, well - google spoiled this one. You are correct of course. I really thought a long time about this puzzle - I guess that says more about me than the puzzle

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