More optical illusions

[Andre Kesteloot]

Gang,

This image looks like it's moving:

    http://www.gafter.com/~neal/Fishwheel5.gif

And this image looks like it's bulging out, even though all the
squares are the same size:

    http://www.ritsumei.ac.jp/~akitaoka/Bulge02.jpg

André N4ICK

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