Atlanta-based magician Victoria Skye has a sideline creating optical illusions “using art, science and math.” She created this one below, which we are having a very hard time wrapping our heads around:
Yes, the lines are actually parallel. I had to break out the ruler myself.
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As Digg points out, this is based on the “cafe wall” optical illusion.
You can see more of Skye’s illusions here.
Source: core77