The object in front of me is supposed to be rectangular parallelepiped, but there is a mysterious three-dimensional movie called "cylinder" that is reflected in the mirror "Ambiguous Cylinder Illusion ...

It is a game to move from the stage composed of various panels so as not to drop the rectangular parallelepiped and drop it in the hole of the goal. In all 33 stages, I use my head anyway. Access is ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This wooden model of a rectangular ...