| Our contemporary world is full of enigmatic things. A number of them can't be described even by scientific specialists. Others constitute a range of illusions. Illusion world is wide, few people have good knowledge about it. Everyone has noticed that when a spoon or a fork is dropped into water it seems to be broken, though in objective reality it is not. There is a great range of other similar optical illusions. Watching different kinds of illusions is a great way of spending time for people with inquisitive mind.
An optical illusion is characterized by images perceived visually that are different from what they are in object reality. An eye gathers information that is processed in mind. In result we get a percept that does not match to what's really displayed. The sorts of the illusions differ according to the object that forms this visual illusion. For instance, literal illusions create images that are really different from the objects that formulate them. You have probably observed such pictures where at first you observe a certain object, but if you look more attentively you realize that this picture is created using other objects. An example of such literal visual illusion is a figure-grounded vase. These images are usually named ambiguous pictures. It's sometimes really hard to see another picture on the same image.
Physiological visual illusions have a certain effect on our eyes and brain and as a consequence we get an illusion of different parameters – color, brightness, size, movement. For instance, there are pictures where some things seem to be of different size or color, when in objective reality they are absolutely the same. Muller-Lyer illusion with arrows is a great example of this kind of visual illusions. Cognitive visual illusions make the brain made not correct conclusions from what our eyes observe. These illusions include paradoxical and impossible things such as Penrose triangle and impossible stairs, and hallucinations as well.
Visual illusions constitute an excellent amusement for people. What is more, they help to have a look at our world from another side. In result our brain will become flexible that will definitely assist you in life. |
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