25 Hollow-Face illusions

This is a collection of 25 optical illusions. Simply print a PDF file, cut it out, stick it together, and stand it on a table or window ledge. When you move around, the head seems to follow you around the room. The effect is really uncanny. Example video of the dragon illusion: How does it work? If we move around when viewing a solid object, our brain knows how the object we are looking at should behave. However the dragon gives us the wrong clues, because we mis-interpret what its shape is. We assume that the nose of the dragon is pointing out towards us, but in fact the dragons head is concave. Illusion List: Brain-Busters Dragon, Cat Illusion, Chucky, Chun-Li, Coati Studio, Dog Trick Academy, Dragon (3 colours), FrankenPaper, Froggie, Iron Man, Japanese Girl (2), Joker, K-9 (Doctor Who), Moving Sculpture, Robocop, Spider Man, Storm Trooper, Super Robot Dog (+ blank), Trick_Art, Vega and Yoda Tip: If you are standing close by, try closing one eye and move around. Cheers, ADHDerby

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