The blue and yellow circles made up of what look like bicycle chains appear to spontaneously rotate.  Try focusing your attention on only one of the six circles at a time and you should find that the one you are focusing on stops moving.  If you want to maximize the motion effect, move your eyes […]

If you take a look at this design from Andreas Aronsson, you will see that each link of the chain is connected in a perpendicular manner in a way that could not physically be possible.  According to Andreas: I had this one sit in my notebook for, I think, more than six months. It took […]