Here are some of the best optical illusions you’ve ever seen. Get ready to have your brain turned upside down!
Fraser’s spiral
This so called false optical illusion
is created by overlapping segments that appear to form a spiral;
however, the arcs are really a series of ordinary circles.
The Ebbinghaus illusion
This optical illusion of relative size
perception is named after German psychologist Hermann Ebbinghaus. This
illusion consists in misperceiving the size of circles. In this version,
as shown in the picture, two circles of identical size are placed close
to each other. One is surrounded by large circles while the other
is surrounded by small ones. The central circle on the right then
appears bigger than the left central circle.
Impossible Cube illusion
This impossible cube was invented
by Charles Cochran in 1966. The illusion of depth in this picture occurs
because of incorrect connections between the cube’s corners. Do not
even attempt to unravel the secret of this unrealistic figure.
Zöllner illusion
In the Zöllner optical illusion, the
parallel lines, crossed with a numerous oblique short lines, appear
to diverge. This effect was accidentally discovered on a cloth pattern
by German astrophysicist Johann Zöllner in 1860.
Jastrow illusion
This illusion was first demonstrated
by Joseph Jastrow, an American psychologist. It lies in the fact that
two figures that are absolutely identical appear to be different in size
when they are arranged in a certain way.
Kanizsa’s Triangle
This triangle illusion is named after
the Italian psychologist Gaetano Kanizsa. To prove that people
experience reality not as it really is but as it is seen through special
filters called mental models, he drew a series of geometrical figures
giving an impression that there is a bright white triangle in the
center. However, this triangle doesn’t really exist at all.
Poggendorff Illusion
It’s a classic optical illusion named
after Johann Poggendorff, a German physicist. A scientist discovered
it in the picture received from F. Zöllner, a famous astronomer. This
illusion shows that in the example above, the black line on the left
appears to be a continuation of the blue line. In actuality, the black
and red lines match up. Interestingly, this optical effect hasn’t been
explained so far.
Blivet
Blivet, also known as impossible
trident, is a classic example of geometrical-optical illusions.
No matter how hard you try, you have no chance to understand this
figure — it simply doesn’t exist.
White’s illusion
At first glance, this illusion seems
contrary to common sense; the gray rectangles are exactly the same color
but they appear different because of the contrasting neighboring
colors — white and black.
Motion illusion
Certain color contrasts and shapes of the patterns depicted in the picture make you think that a static image is moving.
Hermann grid illusion
Ludimar Hermann discovered this optical
effect in 1870 while reading a book on sound by John Tyndall. In the
Hermann grid illusion, the «ghostlike» gray spots appear at the
intersections of white (or light colored) lines on a black background.
These spots disappear when one looks directly at an intersection.
An elderly couple, or songs to a guitar accompaniment
Just look at this loving elderly couple. And now take a closer look. What do you see this time?
Illusory rotating effect
Focus your eyes on a black dot in the
center, then, move your head slightly forward and backward. If you look
at the picture again, you will see the outer circles rotating in the
opposite directions.
The illusion of «The Wall Cafe»
Carefully look into the picture.
At first glance it seems that all the lines are curved, but in reality,
they are parallel. This optical effect was discovered by Richard Gregory
in the Wall cafe in Bristol, where it got its name.
Rotating wheels illusion
Take
a look at the picture. You are likely to see the wheels spinning
in different directions. But if you focus on any wheel individually,
it will stop turning, but the wheels around it will.
Adapted from: The Telegrap
Nincsenek megjegyzések:
Megjegyzés küldése