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All About Stereograms |
| Date Added: February 05, 2011 05:26:30 PM |
| Author: inhfo23 |
| Category: Internet: Games |
| Our world is full of enigmatic things. A number of them cannot be described even by scientists. Others represent a group of illusions. World of illusions is wide, not many people have good knowledge about it. Everybody has noticed that when a spoon or a fork is dropped into a glass of water it seems broken, although in reality it isn't. There is a great range of other similar optical illusions. Watching various types of optical illusions is a great pastime for people with inquisitive mind. An optical illusion is characterized by images perceived visually that are different from what they are in object reality. Our eyes gather info that is processed by brain. As a result we get a percept that doesn't correspond to what's objectively displayed. The sorts of the optical illusions are different according to the object that creates this optical illusion. For example, literal illusions form images that are really different from the objects that formulate them. You have probably seen the pictures where at the first sight you observe a certain object, but when you look attentively you acknowledge that this image is created using other objects. An example of this literal visual illusion is a figure-grounded vase. Such images are commonly called ambiguous pictures. It is sometimes really difficult to see another picture on the same image. Physiological illusions have certain effect on our brain and eyes and as a consequence we have an illusion of various parameters – color, brightness, size, movement. For instance, there are images where some things look as if they are of different size or color, when in objective reality they are the same. Visual illusion of Muller-Lyer with arrows is an excellent example of this sort of visual illusions. Cognitive optical illusions make our brain made incorrect conclusions from what the eyes observe. These illusions include paradoxical and impossible things like Penrose triangle and impossible stairs, as well as hallucinations. Visual illusions are a wonderful entertainment for all the people. Besides, they help to look at our world from the other side. As a result your mind will get more flexible that will definitely assist you in future. |
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