![](/article_picts/102/15021869192945.gif)
Stare at the grey dot in the center.
Now move your head forward and backward.
As your head moves the circles will appear to be spinning.
![](/article_picts/102/15024278081770.png)
Here you get the impression that all the lines of blocks are crooked, yet they are equally laid out and spaced.
![](/article_picts/102/15024278921073.png)
Count the black dots.
Yes, they move.
![](/article_picts/102/15024279889890.png)
Keep staring at the black dot.
After a while the grey haze will appear to shrink.
![](/article_picts/102/15024280568394.png)
How many legs does this elephant have?
![](/article_picts/102/15024281134641.png)
The checkerboard may appear to be caved in, but your eyes are playing tricks on you.
![](/article_picts/102/15024281913473.png)
Here is a two dimensional image that gives the illusion of three dimensions.
![](/article_picts/102/15024282963606.png)
Duck or Rabbit?
![](/article_picts/102/15024284373034.png)
Stare at the picture for at least 30 seconds, then look at a blank piece of paper. You should see a glowing light bulb.
![](/article_picts/102/15024285721154.png)
A man’s face.
And the word liar.
![](/article_picts/102/15024287309297.png)
Is the left center or right center circle bigger?
They’re the same size.
![](/article_picts/102/15024295262471.png)
Find the lowest (or highest) step in the staircase.
![](/article_picts/102/15024298053954.png)
Is the man looking straight ahead or off to the left?
![](/article_picts/102/15024299279967.gif)
Focus on the yellow dots and follow their rotation. The wheel spins clockwise.
Focus on the red dots and follow their rotation. The wheel spins counter clockwise.
![](/article_picts/102/15024301639696.gif)
Stare at the center of the image.
A new color will appear.