How many full cubes can you find in this pattern? 6 or 7?
How many colors do you see? Look at the two pink diagonal lines. There are only 3 colors: White, green, and pink. Look carefully, they are the same.
What do you see? There’s a face and the word liar. This illustration was drawn by Paul Agule.
Do you see a musician or a ladys’s face? See both?
How many legs does this elephant have? Drawn by American cognitive scientist Roger N. Shepard.
Which circle is bigger? They’re both the same size. This illusion is called the Ebbinghaus illusion.
It’s a spiral, right? Take a closer look, these are all independent circles.
Is the blue side in the front or back of the cube?
Stare at the four black dots in the center of the picture for about 30 – 60 seconds. Then quickly close your eyes and look at something bright (like a lamp). You should see a white circle with an image inside it.
Are the lines below straight or are they curved? Try putting a straight edge against the lines on your screen to test your conclusion.
Appearing & Disappearing Objects
Try to count the number of black dots on the image below:
