Cool animated examples of the Muller-Lyer illusion

boing
12

Thanks for the tip; Leeuwarden isn’t that far for me.

I saw the Escher exhibition at the Max Ernst Museum1) two years ago, and it was a treat!

1) Well worth a visit on it’s own, plus they usually have interesting exhibitions.

http://www.maxernstmuseum.lvr.de/de/startseite_1.html