Test Your Imagination

3. Cafe Wall Illusion

Cafe Wall Illusion
SOURCE

Dr. Richard Gregory first observed this illusion in the tiles on the wall of a Bristol cafe (hence the name). The alternating light and dark bricks are staggered and the gray “mortar” lines that separate the layers. But while the lines may look as if they curve, they are actually straight across and parallel.

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 The Chubb Illusion

The Chubb Illusion
SOURCE

The Chubb Illusion reveals that the apparent contrast of an object will vary depending on the context around the presentation. The middle circles here are exactly the same, but paired with a uniform background, the circle seems to have a higher contrast than when it’s surrounded by a high-contrast texture.

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Jastrow Illusion

Jastrow Illusion
SOURCE

Here’s one that recently messed with the minds of Twitter users.

The Jastrow Illusion was discovered in 1889 by psychologist Joseph Jastrow and shows two objects next to one another where the top object appears to be smaller, but in reality, they are both the same size. Watch the video below.

 
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Disappearing Dots

Disappearing Dots
SOURCE

If you stare long enough at one of the dots, the other two will vanish from your eyesight. But if you look at that disappearing dot, it will magically reappear, while the others now begin to disappear.

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Stair Bannister or People?

Stair Bannister or People?
SOURCE

Do you see stair bannisters/columns, or do you see the people?

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Ebbinghaus Illusion

Ebbinghaus Illusion
SOURCE

The two center circles are the exact same size. This is another example of when the space surrounding objects will deceive our eyes and make us think somethings are different sizes, when really they’re the same.

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 Impossible Elephant

Impossible Elephant
SOURCE

At first glance, you might think this elephant is normal, but then you begin to see that it has far too many legs.

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Fraser Spiral Illusion

Fraser Spiral Illusion
SOURCE

The Fraser Spiral is an optical illusion that tricks the brain into thinking the black & white lines are spiraling inward. But if you trace one individual line, you can see they are actually concentric circles and not a spiral.

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