Welcome to the archive of optical illusions, an archive of illusions that play tricks with your brain.
Many of the images you will find here demonstrate visual phenomena, and optical or visual illusions.
You will learn about the complexities of the human eye first hand.
Visit the optical illusions below and give your eyes and brain the time of their lives!
The Lilac Chaser aka Pac-Man Illusion
Lilac chaser is a visual illusion, also known as the Pac-Man illusion.
Moving Spiral Illusion
Stare at the center for 10 seconds and begin moving your eyes around the outer perimeter... Does it appear to be moving, shimmering, or just making you dizzy?
Black Dot Optical Illusion
Stare at the dark dot in the center for 10 seconds... Now move your head forward and backward. As your head moves closer to your monitor and then back away from your monitor, the circles will appear to be spinning.
Glass Tesseract Animation
This is an interesting illusion animation. It has a very neat effect.
In this illusion the figure and the ground are reversible in all ways.
Crawling Bug Spiral Illusion
Please wait a moment until the spiral has finished loading. When it's spinning smoothly, stare at the center of the spiral for about a minute.
Impossible Monumental Columns
Are the columns square or round? Will they support anything?
Wavy Lines Illusion
Are these lines straight and parallel? Use a straight edge to test what you see.
Try to determine the orientation of the items! Perception is off a little... Look Closely! This one will leave your mind confused...
In the Ponzo illusion the converging parallel lines tell the brain that the image higher in the visual field is further away therefore the brain perceives the image to be larger, although the two images hitting the retina are the same size.
In the accompanying figure a white equilateral triangle is perceived... but in fact none is drawn. This effect is known as a subjective or illusory contour.
The Penrose Triangle
The Penrose triangle is considered the impossible figure. The Penrose triangle appears to be solid on the page, but it cannot be built.
Barber Pole illusion
The Barber pole illusion is a visual illusion that reveals biases in the processing of visual motion in the human brain.
The Bezold Effect
The Bezold effect is an optical illusion, where a color may appear different depending on its relation to adjacent colors.
Crazy Objective Schematic Illusion
Is it possible to build this gadget? Look Closely and try to determine the orientation of the picture!
The Crystal Ball
Take a very close look at this image! Stair at the very center crystal ball. Move your eyes very close to the screen and then move away.
Light Bulb Illusion
Stair closely at this light bulb for 20 - 25 seconds. Then immediately stare at a white area on the screen
or at a sheet of paper. You should see a glowing light bulb!
Take a very close look at this image! What do you see? Now, imagine yourself walking in a clockwise fashion. These stairs NEVER end! You will go up and up and up.
How many colors where used?
Take a very close look at this image! How many colors where used to make this image?
Stare at the Circles
Stare at the Circles Below and determine if they are moving or not...
The Moving Man
Does it look like he is moving to you? Well, he's not!
The Wacky Spiral
Do You See A Large Spiral? Well, if you do, You are WRONG. If you look very closely you will see many independent circles.
Colored Cube Optical Illusion
Is the blue side on the inner left back or the outer left front? Good Luck Figuring It Out!
Take a very close look at this image! Who do you see? Looks like Ex-President Bill Clinton right?
Building Block Illusion
Do you think it is possible to build this block from the blueprint? It's virtually impossible.
Do you see a spiral?
Do you see a spiral? Actually, these are a bunch of independent circles! Creating the illusion of a spiral...
Is the left center circle bigger? Actually, they're both the same size.
Take a close look at this so called triangle! Try to perceive its' orientation. Seems impossible.
Face or Illusion
Photo taken by Viking 1 in 1976. What do you see? Is it a Face or just an Illusion?
Cube Optical Illusion
Is the small cube inside a larger cube? Or do you see a small cube on the outside of a larger cube?
Vertical Lines or Not?
Take a very close look at the 2 vertical lines. Do you think one line is longer than the other?
Checker Board Illusion
Checker Board Illusion... Take a very close look at Block A and Block B. Do you think that the colors are a different shade of gray?
Courtyard or Terrace Illusion
Is this a Courtyard or Terrace? You Decide...
Find The Dog
Take a close look at this image. Can you find the doggy in this picture?
What do you see?
Take a close look at this image. What do you see? Do you see an old man's face or two lovers kissing?
Face on Earth
Take a look at the picture below... Can you see the Face on earth?
Count The Black Dots
Try and count the black dots. How many do you come up with?
Stare at this Image
Stare at this image as long as you can. It will eventually drive you crazy...
How Can This Be True?
How Can This Be True? If the partitions are the same, shouldn't every space be filled?
The Color Quiz
Look at the chart and say the color, not the word. Your right brain tried to say the color, but your left brain was reading the word.
Reversible Picture -
What do you see? -
Crazy Line Trick -
Crawling Bug Illusion -
Stare At This Image -
Crazy Line Illusion
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