Size And Distance

Some of the most well known types of illusions, those based on the brain's tendancy to measure the size that something appears based on how far away it is can produce some extremely convincing tricks of the eye.

Category: Size and Distance
Leaning Tower Illusion
Added on 06-05-02009 | 5 comments
These two images of the Leaning Tower of Pisa are identical but if you look at them closely you'll notice that the tower on the right appears to be leaning more than the one on the left even though th...

Category: Size and Distance
Train Tracks
Added on 06-05-02009 | 8 comments
On this picture of some train tracks there are two horizontal bars. Which one is longer ? While the topmost one appears to be longer than the one at the bottom the truth is they are both the same leng...

Category: Size and Distance
Table Size Illusion
Added on 06-05-02009 | 2 comments
These two tables in this image by Roger Shepard appear to be different sizes, the one on the left is oriented vertically and seems to be longer and thinner. Remarkably, both tables are actually exactl...

Category: Size and Distance
Ebbinghaus Illusion
Added on 06-05-02009 | 1 comment
The Ebbinghaus Illusion, also known as Titchener circles is an image of two circles with additional circles around them. In this case the orange circle on the left is surrounded by large blue circles ...

Category: Size and Distance
Floating Circle
Added on 06-05-02009 | 1 comment
The circle in the middle of this picture looks as though its floating above the background. It looks like the blurring on the pattern of the circle creates the illusion that it is closer to your eyes ...

Category: Size and Distance
Hot dog! Space Shuttle
Added on 06-05-02009 | 1 comment
A classic example of an illusion involving near and far away objects so that the larger distant object appears smaller than the object in the foreground. In this case the photographer is pictured with...