This one may have been here before, but I don't remember. Just follow the instructions.

http://www3.atwiki.jp/cloud9science?...do_you_see.pdf
Breukelen advocaat Reviewed by Breukelen advocaat on . Weird Optical Illusion This one may have been here before, but I don't remember. Just follow the instructions. http://www3.atwiki.jp/cloud9science?cmd=upload&act=open&pageid=24&file=What_do_you_see.pdf Rating: 5