Time for nerds to have some fun! Continuing with our Optical Illusion series, we bring you some nice illusions along with explanation that how they work and effect your brain. You can also check other posts of this series here:
PERIPHERAL ESCALATOR ILLUSION
Now, this one is really fascinating. The bars swing left and right on the screen but when you move your gaze a couple of inches above your screen, the bars seem to jump up and down for an instant.
Courtesy : Professor Arthur Shapiro
IN WHICH DIRECTION IS THE TRAIN MOVING ?
Came across this Illusion on Mighty Optical Illusions (http://www.moillusions.com/), on the first sight it looks a piece of trash but when you see the wheels of the train as mentioned by the author, you find that the train is moving to the left also, although at first glance you saw the train moving towards right.Author didn’t gave the explanation, but in my opinion it is some how related to the moving wheel illusion where your brain gives you different results when you focus on different parts of the object.
CHROMATIC ADAPTATION
Fix your gaze on the yellow blue portion for 30 seconds and after wards scroll down and see the image of the sea plane.
You will observe that image of the seaplane seems to be uniform. This is explained by chromatic adaptation.
Consider the example of a dark room, when you enter it you don’t see anything but after sometime your eyes adjust to the level of light and you are able to see a little bit. This allows our eyes to recover from an oversensitivity to a particular stimuli. This adjustment to particular stimuli is called Chromatic Adaptation.
FOCUS AND DISAPPEAR
If you stare at one of the three dots for a while, the other two appear to disappear.
IMMEDIATE CONTRAST EFFECT
The circles inside the cyan square appear to be reddish, while they are the same color as the ones to the right.
Copyright A.Kitaoka
ROTATING REVERSAL
The six ovals rotate in one direction while the lines inside the ovals that rotate in the opposite direction. Now look toward the red dot or the yellow dot. The rotation seems to change. This is because we perceive the rotation of the internal lines in the ring that is further away from the dot.
Courtesy : Professor Arthur Shapiro
ROTATING DISCS
The disks appear to rotate because the concentric gray circles give the impression off spirals.
Copyright A.Kitaoka
PERIPHERAL DRIFT ILLUSION
The peripheral drift illusion gives the idea of a waving image.
Copyright A.Kitaoka 2004
Simultaneous Contrast
We see shift in identical colors when there is a different background on which they are framed resulting in a phenomena called “simultaneous contrast”. This results in a a variety of affects on how we see objects.
For this illusion, look at the diagrams below. Do you see different colors on each side of the stripe? In each picture, you observe that squares present at the left side of the image are more darker compared to those at the right. To clearly see the simultaneous contrast effect, watch the images from the side of your picture.
Kanizsa Triangle
Let me guess, you perceived a white equilateral triangle in the above picture. But, as a matter of fact none is drawn. This effect is called as illusory contour.
You will also observe that the white triangle is more brighter than the surrounding, but in fact it has same level of brightness as does the background have.