| Our modern world is full of enigmatic things. Some of them cannot be explained even by scientists. Others constitute a group of illusions. Illusion world is wide, few people have deep knowledge about it. Everybody knows that when a spoon or a fork is dropped into a glass of water it seems to be broken, though in reality it's not. There is a great range of other similar optical illusions. Watching various types of optical illusions is a great pastime for people with broad mind.
An optical illusion is characterized by visually perceived images that differ from what they are in object reality. An eye gathers info that is processed by brain. As a result we get a percept that doesn't correspond to what's really displayed. The sorts of the optical illusions are different according to the object that forms this optical illusion. For instance, literal illusions form images that are really different from the objects that make them. You have possibly observed the pictures where at the first sight you notice a certain object, but if you look more attentively you realize that this image is formed using other objects. An example of such literal illusion is a figure-grounded vase. Such images are commonly called ambiguous images. It's from time to time really hard to notice another picture on the same picture.
Physiological visual illusions have a certain effect on our brain and eyes and as a consequence we get an illusion of different parameters – color, brightness, movement, size. For example, there are images where some things look as if they are of different color or size, when in objective reality they are the same. Muller-Lyer illusion with arrows is a great example of this sort of optical illusions. Cognitive optical illusions make the brain made not correct conclusions from what our eyes see. These are paradoxical and impossible things such as Penrose triangle and impossible stairs, and hallucinations as well.
Visual illusions constitute a great entertainment for all the people. Furthermore, they help to have a look at our world from the other side. As a consequence your brain will become more flexible that will definitely help you in life. |
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