| Our contemporary world is full of mysterious things. A number of them cannot be explained even by scientists. Others represent a group of illusions. Illusion world is great, not many people possess good knowledge about it. Everybody has noticed that when a spoon is dropped into water it seems to be broken, although in objective reality it is not. There is a wide range of other resembling optical illusions. Watching different sorts of illusions is a wonderful pastime for people with broad mind.
An optical illusion is characterized by visually perceived images that are different from object reality. An eye gathers information that is processed in mind. As a consequence we get a percept that does not correspond to what is objectively displayed. The types of the optical illusions differ in accordance with the object that forms this optical illusion. For example, literal optical illusions form images that are really different from the objects that formulate them. You have probably observed the pictures where at first you notice a certain object, but if you look more attentively you realize that this image is created using other objects. An example of this literal illusion is a vase formed by two faces. Such pictures are usually called ambiguous pictures. It is from time to time really difficult to see another picture on the same picture.
Physiological visual illusions have certain effect on our eyes and brain and in result we obtain an illusion of various parameters – color, brightness, size, movement. For example, there are pictures where some objects look as if they are of different size or color, when in reality they are the same. Optical illusion of Muller-Lyer with arrows is a great example of this sort of visual illusions. Cognitive illusions make the brain made not correct conclusions from what our eyes see. These illusions include paradoxical and impossible things like Penrose triangle and impossible stairs, and hallucinations as well.
Visual illusions represent a wonderful entertainment for all the people. What is more, they help to look at our world from another side. In result our brain will get more flexible that will definitely assist you in life. |
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