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How come the "milk spot" disappears when not looking right on top

ChrisRxChrisRx Posts: 5,619 ✭✭✭✭
in U.S. Coin Forum
When tilted just a tad, the spot goes away. So does this mean its not on the coin?

image
image

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    IrishMikeIrishMike Posts: 7,737 ✭✭✭
    Lactose intoleranceimage
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    FLBuffaloHunterFLBuffaloHunter Posts: 3,127
    image
    Never teach a pig to sing. You'll waste your time and annoy the pig image

    image
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    meos1meos1 Posts: 1,135 ✭
    If the squares alternate light and dark then B cannot be the same shade as A due to the alternate adjacent position of B in relation to A.
    I am just throwing cheese to the rats chewing on the chains of my sanity!

    First Place Winner of the 2005 Rampage design contest!
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    FLBuffaloHunterFLBuffaloHunter Posts: 3,127
    Squares A and B are the same color as the bar on the bars on the right demonstate. It's a well known optical illusion by your adjusting to the surronding contrast of adjacent squares and compensating for the shadow caused by the cylinder as is explained.
    Never teach a pig to sing. You'll waste your time and annoy the pig image

    image
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    FLBuffaloHunterFLBuffaloHunter Posts: 3,127
    Copy the image into any photo editing software and use the eye dropper tool to get the RGB values for both squares, you will see they are both 120,120 & 120. The dropper isn't fooled like your eyes are.

    Never teach a pig to sing. You'll waste your time and annoy the pig image

    image
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    meos1meos1 Posts: 1,135 ✭
    OK I see the sceintific point of the illustration. But in a black and white tile grid B is a white tile and A is a black tile.
    I am just throwing cheese to the rats chewing on the chains of my sanity!

    First Place Winner of the 2005 Rampage design contest!
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    FLBuffaloHunterFLBuffaloHunter Posts: 3,127
    They look that way when in fact they are the same shade of grey. Use the eye dropper test to prove it to yourself.
    Never teach a pig to sing. You'll waste your time and annoy the pig image

    image
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    mrpotatoheaddmrpotatoheadd Posts: 7,576 ✭✭✭


    << <i>If the squares alternate light and dark then B cannot be the same shade as A due to the alternate adjacent position of B in relation to A. >>

    Squares are light and dark when they're compared to adjacent squares, but there's no global "light" and "dark" in the illustration in the sense that all light (or dark) squares are the same shade.
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    SpaceMonkeySpaceMonkey Posts: 3,311 ✭
    very cool FLBuff!

    for the doubters... i did a box of the same shade in photoshop... whoa... trippy!

    /ed



    image
    image

    The Maddy Rae Collection
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    tahoe98tahoe98 Posts: 11,388 ✭✭✭



    OH MY BURNING EYES!
    "government is not reason, it is not eloquence-it is a force! like fire, it is a dangerous servant and a fearful master; never for a moment should it be left to irresponsible action." George Washington
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    LanLordLanLord Posts: 11,754 ✭✭✭✭✭
    What about the purple cylinder?image
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    57loaded57loaded Posts: 4,967 ✭✭✭


    << <i>image >>



    i get it, but in this case it has to do with reflection/refraction of a constant (light) and the coin, not an optical illusion.




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    57loaded57loaded Posts: 4,967 ✭✭✭


    << <i>When tilted just a tad, the spot goes away. So does this mean its not on the coin?

    image >>



    it's over by the "T", right? and maybe she is handing some of it off as well? and on the "L" and sunburst? and on dress/middle?

    howmany are there?
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    fastrudyfastrudy Posts: 2,096 ✭
    All I see is a white box with a littlr red 'X' in it. If you want to see an award winning optical illusion. hit the link and scroll down to 'lean images'.

    link
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