 3D Paper Optical Illusions
This green dragon is more than an ordinary decoration, it is an optical illusion! A picture says more than a thousand words, but in this case we need videos to demonstrate. When you move, it seems like the dragon follows your movement and turns its head! The effect is called a Hollow-Face 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 dragon's head is concave. There are many variants of the original dragon illusion by Jerry Andrus. All templates below are included in the collection 3D.Paper.Optical.Illusions.2014.06.18-UrDJUret. You can get them right now - totally free! Just download the 133 MB ZIP-file, which contains the templates and instructions (high-quality PNG and JPG images). Then print your favourite figure(s) on regular paper with your printer, cut it out, fold and glue. That's all! 
     
Motion Aftereffect Illusions
It is indeed possible to see things in a different way.. These powerful motion aftereffect illusions may make you hallucinate for a short while. The effect is harmless and really easy to achieve; Simply stare at the middle of the illusion for about 90 seconds, then look away from the screen and focus on any object. An amazing bumpy and wavy effect should then appear! See it to believe it, we provide two awesome videos!
If you have an older Windows PC (32-bit OS) then you can download and run an small .exe-file with a pinwheel motion aftereffect illusion, which usually also gives a really nice visual effect! Still Moving ImagesBelow are handpicked still images that looks like they're moving. You may print these on paper aswell, the effect will still be there :-). You can click on the images to view them full-size. 
Animated Optical IllusionsThe animations below seems to be changing after looking at them for a while... Stare at the cross in the middle and watch the dots disappear! 
The female spins to the left... or was it right? 
Can you understand the women? 
Mindcontrolled train... 
Classical Illusion ImagesThese images might trick you... The blue and the green spirals are actually the same color 
An impossible construction, called "The Penrose triangle" 
A lego variant of the Penrose triangle 
A and B are the same color 
A and B are the same color, also in this picture 
These circles are actually perfectly round 
Yet another impossible construction 
Look around - the black dots do not exist! 
Stare at the dot in the middle and see the colors disappear 
Here is a vase with profiles of its authors 
If you step away from your screen, the two faces should swap over 
The vehicles have exactly the same size 
Stare at the dot in the middle and see the colors disappear 
Look at the dot in the middle and move your head forward and backward... 
Look for a while and see if the blue wall is in front or back? 
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