Illusion
Browse our online educational games, classroom resources and lesson activities for interactive whiteboards and. The Pinna-Brelstaff illusion is tremendous fun: concentric rings of shapes, with inverse shading. User can create, shape and manipulate illusions, causing targets to see, hear, touch, smell and/or taste things which do not. This illusion consists of a real sensory stimulus. The Illusions Index is a fully searchable curated collection of optical illusion tape art installations that trick the eye and blur dimensions.