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Radioactive lines
---Bright illusionary lines!
When you stare at the circles, you can see some bright radioactive lines occur, just like the disc reflection. (BTW, I think it works better when the picture is small.)
You can see the edges of squares concave and circles appear to be rhombus-like, but still with arcs. You can also see the bright radioactive lines occur at the place where lines meet. (8 obvious ones and 8 subtle ones)
