Some of my favorite stereograms incorporate realistic photographic elements with a hidden image component. Stereogram master Gene Levine has perfected this technique by injecting stereograms into realistic scenes. His latest book titled Incredible 3D Eye Tricks features one hundred such “scene” stereograms created by himself and co-author Gary W. Priester. Before you try to find the hidden message in the sign, can you guess what it says?
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Loading...Using an LCD screen, a transparent overlay and four yellow Post-It Notes, Brusspup creates his own version of the moving square illusion.
According to Brusspup:
There are 2 sets of lines moving back and forth perpendicularly but when the paper squares are placed on the screen the lines suddenly appear to be a square moving in a circular motion.
(4 votes)Loading...This is an excellent example of the way in which our eyes deceive us. In the street view shown below, the line AB looks to be much longer than line CD. If you measure them, however, you will find that they are exactly the same length.
(5 votes)Loading...Within the larger gray and blue squares are two smaller squares. The small square on the left appears to be a blue or violet color while the small square on the right appears to be gray. They are, in fact, the same color.
Do they look the same to you?
(3 votes)Loading...Stare at the blinking green dot in the center of this animated image. As you do, you will begin to experience a motion induced blindness. The three yellow dots will start to randomly disappear and reappear. Sometimes you will notice that one is missing and other times it may seem that two or all three are missing. The yellow dots do not disappear at all, they are always present. This can be confirmed by watching the animation for a while without fixating on the blinking green dot.
(3 votes)Loading...The grid presented below looks normal in the center section but “broken” on the left and right sides. Stare at the center of the rectangle for 15-30 seconds and notice what happens to the “broken” portions of the grid. Do they seem to repair themselves before your very eyes?
Ryota Kanai from Utrecht University in The Netherlands discovered this illusion. It was also a finalist in the 2005 Best Illusion of the Year Contest.
(5 votes)Loading...Using Google Earth, a mountain formation resembling the head of an Indian can be found near Alberta, Canada. The image features a lot of facial detail including an eyebrow, an eye, a nose, lips, a chin and a neck. Some people have even noted that it looks like the profile might be listening to an iPod. If so, I wonder what he is listening to?
You can view this illusion yourself on Google Maps by clicking here. Compare this natural optical illusion to the previously-featured Apache Head in the Rocks. Which do you think looks more like the head of an Indian?
(3 votes)Loading...
