> You mean this checker-board, where a white square in the shadow has > absolut the same color as a black square in the light? > <http://images.google.de/images?q=checker+illusion&hl=de&btnG=Bilder-Suche> > Yogi Marc Michael
Hi Marc : Nice link ! Say's a lot , doesn't it ? Thanks for that . Garry Curtis http://www.niagara.com/~studio
