6J10 The Eye

Resolving power - Video

demonstration image
Catalog: 
6J10.81
Location: 
3_1
Video Encyclopedia :The camera zooms in on a vertical series of back illuminated double slits, each separated by half the distance of the preceding pair.

Impossible triangles - Video

demonstration image
Catalog: 
6J11.50
Location: 
3_1
Video Encyclopedia :An optical illusion that depends on viewing angle.