It’s not a trick, if you’re wondering. There actually is something to see.

  • 4am@lemm.ee
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    1 year ago

    I can only see them backwards by crossing my eyes. There’s as clear as day but they fall into the page, not pop out of it

      • badgerwrench@lemmy.world
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        1 year ago

        Yeah. There’s both versions of this. Cross view and parallel view. Depending how it’s made, it can pop out or sink into the image. Parallel view wants you to watch through the picture to a point where the patterns converge again. The tricky part is to focus on the converging image.

        • triclops6
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          1 year ago

          Do that’s what I do: I cross my eyes until I shift one pattern over to another

          It’s always sunk in though