Wow, this video has totally screwed up my brain

This is not an optical illusion, but it takes advantage of exactly the same principles that make optical illusions work: Our eyes and brain don't scan reality like a camera does. Instead, the brain interprets external inputs, building its own reality. No spoilers, just watch. » 3/03/15 8:37am 3/03/15 8:37am

At Least We Got a New Optical Illusion Out of That Goddamn Dress

Never has the color of a dress prompted so much excitement on the Internet. But now, along with some fascinating insights into the science of vision and lessons in overexposure, we have an enduring reminder of the meme, in the shape of an optical illusion truly for the modern age.[XKCD] » 2/27/15 3:30am 2/27/15 3:30am

Wow, all these rotating white dots are actually moving in straight lines

It looks like the white dots in this optical illusion are all orbiting an imaginary point in space that, at the same time, is orbiting the center of that red circle. They are not. In reality, they are all moving in straight lines going from one side of the red circle to the opposite one. » 7/21/14 4:08pm 7/21/14 4:08pm

Optical illusion painting changes its perspective as you move around it

When I started to watch this video I thought I wasn't looking at a painting but a high definition flat display that tracked your eyes, modifying a 3D model to give you the illusion of real depth. And then the magics finally get revealed. It's so simple and so damn cool. » 7/01/14 11:46pm 7/01/14 11:46pm

Whoa, this biker looks like he's trapped inside a video game level

What a tricky mind trip. Though it looks like this fixed gear biker is playing a video game or stuck inside a M.C. Escher drawing or a part of an optical illusion, he's actually riding on a real bike course made with real ramps and doing real jumps. It just looks crazy from our perspective » 4/30/14 11:18pm 4/30/14 11:18pm

Believe it or not, these four squares move at the same constant speed

These four squares appear to move at different speeds, stopping and moving, waiting for each other in pairs. In reality, they are always moving at exactly the same constant speed. Seriously. I opened the GIF in Photoshop and used guides to measure it—in every frame, the squares align perfectly. » 4/07/14 11:13am 4/07/14 11:13am

This mind-bending optical illusion is freaking the hell out of me

It may seem like this guy has a space-time bending black hole on his skull, which is about to swallow that guy's finger, but of course it's just an awesome optical illusion, created by artist Cory Ferguson, instagrammed by Geometry Chaos. If you have to get a tattoo, you may as well blow people's minds with it. » 3/05/14 1:30pm 3/05/14 1:30pm

These obviously irregular rings are actually perfectly round circles

Look at these grey circles. They look bent, right? Like somebody put a ring in a vice and squeezed it? Actually, it's just an incredible optical illusion courtesy of @SciencePorn. Both circles are perfectly round. Really. No really. » 1/03/14 4:11pm 1/03/14 4:11pm

How did a toy car magically appear behind these two pieces of paper?

In this illusion, a toy car seemingly appears from no where. How is that possible? Well, the car was always there. Really. It's a simple but masterful trick, the toy car is programmed to travel along a designated route while the red cards are shown off as a distraction. As one card is shown to reveal nothing behind… » 12/27/13 6:00pm 12/27/13 6:00pm

This amazing T-rex illusion is somehow moving its head to follow you

As far as tyrannosaurus rex replicas go, this one seems pretty cheery. Sure, it has sharp teeth and claws but they look playfully toothy. One thing scary about it though: the head and eyes seems to follow you wherever you go. Like the paper T-Rex is watching your every move. What's scarier? It's not actually moving.… » 12/23/13 9:00pm 12/23/13 9:00pm

What kind of sorcery illusion lets these two blocks be the same color?

One is dark, one is light. One is gray, one is white. These are obviously two different blocks with two different colors right? Wrong. The two blocks are the same color. Seriously, they're the same shade of gray. Just place your finger across the seam (where the blocks meet in the middle) to reveal the illusion. Just… » 12/06/13 11:18pm 12/06/13 11:18pm

Newly discovered optical illusion will screw up your mind

Scientists have discovered a new optical illusion that will screw up your brain big time. Focus on the red cross while the dots move. They are wriggling around, right? Wrong. All of them are moving "in straight trajectories and random directions without colliding." » 11/13/13 3:05pm 11/13/13 3:05pm

You'll Come Out Of This Illusion Exhibit Questioning Everything

It's disorienting to walk into a room where nothing is as it seems. Your doctor might be grimacing even though your test results are fine. Or everything might look normal in your house until you realize that there's a cable outage and your internet is down. But if everything were an optical illusion you would probably… » 9/08/13 2:00pm 9/08/13 2:00pm

Optical Illusion Turns Pretty Hollywood Actors Into Freaky Monsters

Not even Hollywood's most beautiful are inmune to our brain's faulty image processing. Liv Tyler, George Clooney, Brad Pitt, Gwyneth Paltrow, Halle Berry, Robert Downey Jr., Keira Knightley, Christina Hendricks—all of them turn to creepy monsters when you get them through this freaky optical illusion. » 1/28/13 4:00pm 1/28/13 4:00pm

This Optical Trick Is Annoying the Hell Out of Me

So, here are some lines moving like crazy. Stop moving like crazy, you lines! Oh, here are some squares. "Hello lines, let's all play nice together!" they say. Now everything makes sense. How did this happen? Eye witchcraft! Thank you for the squares, stupid! » 9/21/12 4:56am 9/21/12 4:56am

This Crazy Optical Illusion Makes Beautiful Celebrities Look Grotesque

Watch this video while staring at the cross in the center, and you'll see bulbous foreheads, gigantic noses and terrifying eyes. Watch it again while looking at the faces, and you'll see they're perfectly normal pictures of attractive Hollywood actors. What the hell? » 5/23/12 7:03am 5/23/12 7:03am

Kisai Finally Makes An Easy-to-Read Watch—Once You Figure It Out

I'll admit it, it's been nearly a month since I covered the Kisai Optical Illusion watch and I still can't read the damn thing (it's a schooner, I'm told). But Kisai's latest user-submitted design is actually quite easy to interpret—hint: it isn't Morse code. » 2/21/12 3:00am 2/21/12 3:00am

This Optical Illusion Will Give You a Headache For the Next Two Hours

These are four perfectly round, concentric circles. Wait no, they aren't. Oh yes, they are. No, they are not. Are they? No. Yes. Would you please stop moving right now? Stupid circles made of stupid squares. [Thanks Karl!] » 2/02/12 8:50am 2/02/12 8:50am

Shake Your Head Optical Illusion Will Require Aspirin Afterwards

If you look intensely at these black bars, you will just see black bars. But if you shake your head, you will see an image. See? No. Shake it again. Yes? OK. Have fun until you get a headache. » 1/27/12 12:40pm 1/27/12 12:40pm

Look! It's a Sailboat—Wait, No, It's 4:15

You know what I hate? Glancing at my watch and actually reading the correct time. Thankfully, Kisai's new watch forces me to read it like I would a 1990's optical illusion poster. » 1/25/12 12:20am 1/25/12 12:20am