e-book Incredible Visual Illusions - You Wont Believe Your Eyes!

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For the picture in this entry, what is the design? It looks like spirals, right? But they are actually perfect concentric circles.

The illusion shows the difference between what the eyes see and what the brain recognizes. What the visual system is trying to do is figure out what pieces are part of the same object. So people see spirals because of the alternating colors and that makes it look like the objects are color coordinated instead of being in the same shape.

If you stare at the black dot in the image above, when the black and white image comes back up, you should be able to see it in color. Pretty trippy, huh? The reason you see the colors is a phenomenon called afterimage. What happens is that there are three types of color receptors in the eye that are most sensitive to color and they take in red, blue and green. So when you stare at these colors for too long, the receptors get tired.

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This leaves you with the afterimages and it goes away once your tired receptors adjust. The foreheads are bulging, the eyes get much creepier and their noses are huge. The illusion, called Flashed Face Distortion Effect , was discovered by accident. An undergrad first noticed the effect when he was flipping through pictures quickly on the computer. Then the researchers found that if you align the eyes and flash pictures quickly, the difference became more grotesque. A notable change is that it exaggerates features.

For example, if one person has a large forehead, then it appears even bigger in the picture.

Visual Phenomena & Optical Illusions

The researchers are currently looking into what would cause this odd phenomenon. In the above picture, nothing is moving. While it is a common optical illusion, no one is really sure what causes it. With this fascinating illusion, look at the cross in the center of the picture. Why the blank spot turns green is because the lilac colored dots have oversaturated your retinas.

So when the lilac disappears, you see the green because it is a complimentary color; it is a white light without the lilac color. Instead, we focus on things that do change, so it simply follows the blank spot because that is the only thing that is changing. As depicted above, there are two pictures of the same man.

When you look at the pictures upside down, they look perfectly normal. This strange quirk in our visual recognition system is called the Thatcher effect because it was first demonstrated on a picture of Margaret Thatcher in There are a number of ideas as to why this happens. The first is that people possibly have a problem recognizing upside down expressions and the brain tries to fix that. It was, in fact, just a scientific demonstration of how the eye sees things differently in varying light sources and how our brains all handle this interpretation in ways that are unique to us.

First, we had the dress, then we had the shoe. In , an innocuous photo of a trainer was posted online in a Facebook group. It was a subject of much debate and had Twitter all in a flap too. It was eventually revealed that the trainer is, in fact, pink and white, if you saw anything else it was a mere trick of the light or down to how your eyes perceive colours. In , Twitter user LilMaarty posted this image , apparently confused over whether the photo showed a woman's back or just her neck. The Tweet was the subject of much debate and was retweeted over 30, times.

It turns out it is her back, in case you're wondering. Another brilliant optical illusion created simply by the sun being at a specific place in the sky.


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This one seems to show oddities in the windows caused by their shadows which makes the building look like it belongs in Inception. A simply brilliant image that plays real havoc with both your eyesight and your brain. One of the finalists for the " Best Illusion of the Year Contest " makes for pretty mind-bending viewing. Here Kokichi Sugihara places a set of cylinders in front of a mirror. The reflection shows a different shape until the object is revolved and then we see the opposite.

It's best viewed in th is video. If you're left scratching your head after watching that video, you can see a breakdown of how it works here. There is no red in the picture and yet our brains clearly interpret the red of the strawberries as still being there — assuming you're seeing them under a blue light source and extrapolating accordingly.

This image was taken in Hawaii and shows a weird time of day when the sun is at such a perfect position in the sky that no shadows appear near these posts. The result is what looks like video game rendering rather than real life. You have to look a few times to establish a firm sense of reality with this one. Sometimes an illusion can be as simple as a pattern blended into another in the same way that camouflage works. This photo was posted on 9gag with the headline "Just spent 30 mins searching for my Dad's iPad" — can you spot the hidden tablet in the photo?

As far as optical illusions go, this one is both simple and painful. Whoever thought two pairs of eyes and two mouths would be enough to break your brain and make it painful to focus? This tasty illusion apparently shows a way to get never-ending blocks of chocolate out of a single bar. Alas, it's all a trick and simply involves a shorter and shorter bar. Still pretty clever stuff! In another Tweet-storm , yet another optical illusion based on an everyday object appears to confound logic and physics.

One wooden train track block is apparently longer than the other, yet when put on top of the other, they're the same length. The solution to this apparent mystery is contained within the replies to the initial Tweet, but we'll let you enjoy it in the meantime. This illusion requires you to stare at the white dot on the woman's nose on the left for 15 seconds, then look to the right of the image at the blank space. You should see a flicker of the full colour photo of the woman. This photo appeared on Imgur and caused a bit of a splash. A little girl appears to be jumping into a swimming pool while simultaneously blowing bubbles like she's already underneath the surface.

Commenters quickly pointed out that her hair is dry and the apparent air bubbles could just be droplets of water from the splashing, but no conclusion was reached as to what was actually happening. A simply perfectly timed photo of a pooch having a rest near a felled log. The result is a mild optical illusion which makes it look like the dog has either been sawed in half or is a break in the make-up of reality. Barking mad. This one is a simple trick of the eye.

This is not an animated picture, it's a static file that shows a mass of intertwined snakes. But if you stare at different sections you'll see the snakes writhing and squirming. This optical illusion has taken on many different forms since it first found its way into publication in a book "Philosophical investigations" by Ludwig Wittgenstein in Here it is suggested that there are ambiguous images that can be seen in two or more different ways.

10 Eye-Altering Optical Illusions

In this instance, the drawing could be a rabbit or a duck or both and what you see first will be down to your perception of the world or based solely on suggestion - the duck and rabbit axis in this version make it easier to quickly decipher both variations. This photograph taken on the beach seems to show the speaker on a floating platform. No doubt down to our brain interpreting the shadow of the flag blowing in the wind as the shadow of the speaker's platform and microphone instead. There are a few of these sorts of optical illusions on the web — a simple image of two people embracing throws your brain into confusion where the couple are at strange angles and it's hard to immediately decipher which head or other body part belongs to which person.

Here Stuart Rutherford managed to magic an owl's face inside his coffee mug by simply dropping a couple of Hula Hoops into the mix. Last year Blake Lively posted an image to her Instagram account showing a Magic Eye-like image to help promote her shark movie "The Shallows". If you're struggling, the official Magic Eye website has instructions on how to view the 3D images but basically you're trying to focus through the image while looking at it or blurring your vision until it becomes clear.

Erik Johansson is a Swedish photographer and a whizz with Photoshop who likes to take real photographs and turn them into surreal optical illusions. Common sense crossing is just one of his many works and one that we find particularly messes with our eyes! Magnificent artist Howard Lee creates hyper-realistic drawings that are so brilliant it's hard to tell them from the real thing.

This talent for creating optical illusions is demonstrated in his Youtube video which shows him cutting, bashing and setting fire to the real versions of his creations. Every now and then advertising companies do something clever that captures our imagination. Something as simple an optical illusion can be enough to help a brand stick in our minds. This advert from Papa John's pizza was deemed clever enough to win an award at the Cannes International Advertising Awards and simply featured a mini pizza delivery man on a bit of card that could be put on someone's front door so when they looked through the viewing hole they saw the man on the other side.

In another advertising campaign , Honda produced a video featuring a range of optical illusions to help sell their new CR-V — all aimed at helping to promote a big car experience but with a smaller economy vehicle. Incredible street artist Sergio Odeith turns everyday corners in the real world into incredible three dimensional artworks with ultra-realistic anamorphic graffiti painted across different surfaces to give the illusion of a depth that doesn't exist. Letters leaping out of walls, creatures lurking in corners, other worlds coming to life in the corner of a forgotten space.

His works play havoc with the eye and create marvellous murals that are a pleasure to behold. The Storseisundet bridge is one of the largest bridges in Norway and photograph from the right angle it gives the impression of being a bit of road that comes to an abrupt and dangerous end some 75 feet above the ground.

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However, the bridge is actually a cantilever design with a curve to it that simply makes it arc away into the distance. In , eyewear manufacturer Ray-Ban teamed up with optical illusion masters Brusspup to create an ad campaign which included anamorphic illustrations which look like real three-dimensional objects from the right angle.

The globe and baseball are the standout pieces of this artwork and we think they're thoroughly impressive.

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For more optical illusion goodness, check out Brusspup's Youtube channel. Stefan Pabst is yet another talented artist with the ability to create optical illusions from drawings, paintings and sketches. In a series of works he creates the illusion of three-dimensional images on flat paper surfaces. Lesman Paredes was pretty happy with his performance at the Junior Weightlifting Championships in so much so that after completing a kg clean and jerk he can be seen taking off from the ground. Alas, this is not the case of Superman finally revealing himself to the world, but simply a combination of bouncy surface underfoot, heavy weights being dropped after a successful lift and a well-timed super celebratory jump.

Unsurprisingly, the photo was later subjected to a Reddit photoshop battle.