Optical illusions are phenomena that when perceived by our eye do not conform to reality. These illusions occur when the eyes or the brain are stimulated excessively (as the exposure to different kinds of brightness, color, movement, etc.) or due to cognitive factors in which our knowledge about the world intervenes.
In conclusion, the human brain can only concentrate on one object, so when two objects are presented in a single image, confusion is caused and the brain goes into disorder, which leads to see another vision of the seen.
Stare at the center of the image. In a few seconds you will notice how the spots will disappear and you will only see a white background.
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## If you stare for a few seconds at the black dot in the center of the rotating circle, you will perceive that it turns in the opposite direction.
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## Although they look like diagonal lines, the lines you see are parallel. This effect is due to the layout of the frames and the contrast between colors, which make it difficult to see the line that separates the rows and makes each frame appear wider at the ends.
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## If you stare at the black dot, the gray line on the orange background will turn blue.
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## Stare at the black cross in the center and you will perceive a green circle in the space that the magenta points leave blank. After a few seconds you will notice that the magenta points disappear.
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## Look at the black dot in the center of the image for a few seconds and you will notice that the colored dots that surround it will disappear.
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## These lines seem to cross each other, but in fact they are concentric circles. The arrangement of the frames that form the circle give clues to the brain that lead it to infer a spiral.
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## Although it seems that the upper cube is darker than the lower one, if you cover with a finger the space that separates them you will see that both are of the same color.
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## The "A" box looks darker than the "B", but they are actually the same color.
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In this gif you can see what happens:
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## The room of Ames.
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The forced perspective effect is due to the trapezoidal shape of the room.
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## Black and white image, in full color.
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When we expose ourselves to a large amount of light of a certain color, the cones that perceive this light become fatigued and stop responding for seconds, which allows the illusion of just witnessing.
Which of they do you like more?, tell me in the comments.
SOURCES:
- http://fress.co/15-impresionantes-ilusiones-opticas/
- https://verne.elpais.com/verne/2016/01/27/articulo/1453897011_477533.html
- https://genial.guru/admiracion-curiosidades/16-ilusiones-opticas-que-jugaran-con-tu-mente-65505/
- https://es.wikipedia.org/wiki/Ilusi%C3%B3n_%C3%B3ptica
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