The term optical illusion or optical illusion applies to all illusions that "deceive" the human visual system when they make them see anything that is not present or in an erroneous way. Usually the images tend to fiddle with the unconscious of the human being, which sometimes takes time to understand what is happening.
1 - Crayon red lines
As you look closely at the red lines, they look crooked, but if you stare, you will realize that they are straight. Confused, is not it?
2 - Yellow lines
Incredibly, the yellow lines in the image are the same length.
3 - Circles in motion
Yes, you are not seeing wrong. Staring at the black spot and moving the head back and forth, the impression is that the circles are moving, but they are not.
4 - Two faces or a chalice
n the image it is possible to observe two human faces or a chalice. However, not all people can see the two illusions.
5 - Lines
It may appear that the lines are crooked, but in fact they are totally horizontal.
6 - Cow
It took a while until you could see the cow in the picture, right?
7 - Move the image down and up
Staring at the image produces confusion in most people's brains.
8 - Circles moving
If you look closely at this image you will observe the circles moving.
9 - Corrugated Sheets
Yes, that's right. The leaves seem to move, but if you stare in the middle you should slow down or stop fully moving.
10 - Black backgrounds
The top of several pillars appears to be black. But looking very well the impression is the opposite.
11 - An elderly woman or a young woman
What can you see in the picture, an old woman or a girl?
12 - Dark spots
When you look a long time for the image, black spots appear at the intersections of white lines.
13 - Blue flowers
If you stare at the picture the flowers will start to rotate and move.
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