Students' Work: Impossible Objects

The object from the previous picture, viewed from a different position. The red point indicates the centre of projection that provides the illusion from the previous image. From there the gap between the first and the last step is invisible.
See also the following picture.
(Image 2 of 3)

Created by Clemens Etl (2014) using POV-Ray - The Persistance of Vision Raytracer.