00:00Well, who do you see here?
00:02If you said it was one of the most popular sharks in the world, Ed Sheeran, you're right.
00:07But there is someone else hidden in this image.
00:10If you can't see this person, try to fold your eyes.
00:13Or take a few steps back from your screen.
00:16Yes, back, a little more.
00:19There you go.
00:20Now, can you see how Ed suddenly transformed into Lady Gaga?
00:25This illusion is known as a hybrid image.
00:28And it occurs when we mix the low spatial frequencies of an image with the high spatial frequencies of another image.
00:35So, depending on your point of view, you will see two different images.
00:39In simple terms, all the fine lines in this image represent Ed Sheeran.
00:44But when these fine outlines disappear, you see the big blurry image, Lady Gaga's portrait.
00:50The same effect occurs here.
00:52We all read the word Southwest.
00:54Very clearly, isn't it?
00:56But look at what happens when we make this text very, very small.
01:01Now, all we can see is the word Northeast right in front of us.
01:06Enlarge it again, and you will see that Southwest has actually never disappeared.
01:12People often see faces hidden in everyday objects.
01:15Like this pepper that looks like a Grinch, or this root that looks like a little dancer.
01:21And this bike.
01:22Oh la la.
01:24It looks like an alien playing the saxophone.
01:27This phenomenon that makes us see faces in ordinary objects is so common that it even has a name.
01:33Pareidolia.
01:35This is also why we can look at a magnificent landscape like this and see a really familiar face.
01:41Can you guess who it is?
01:43Yes, incredible.
01:45It's the unique and wonderful Beyoncé.
01:47And now?
01:49Does this face seem familiar to you?
01:51Look closely at this image and you will find the answer.
01:55So, tell me, did you spot Adele?
01:58Yes, here she is.
02:02Oh, sorry, I didn't mean to scare you.
02:05But something really strange is going on with this dinosaur.
02:08Answer in the comments.
02:10Do you see this black silhouette turned to the left or to the right?
02:14Or maybe both?
02:16Yes.
02:17That's the right answer.
02:19This dinosaur is an ambiguous type of image and it seems to turn in both directions.
02:24This effect becomes even clearer when we see the 3D version of the image.
02:28Do you see that now?
02:30The key element here is that the static and black version of the image is ambiguous in terms of depth.
02:37If we put the image on pause, the silhouette will give us the impression that the dinosaur's head is either close or far away and turned to the back.
02:46That's why our brain is so disoriented.
02:50Oh, look, here are the lovers Zendaya and Tom Holland, but in a strange form.
02:55It is clear that they share the same body, but can you tell who is holding whose head?
03:00Is Zendaya trying to bring Tom Holland closer to her or is it the other way around?
03:05Well, both answers are correct, because it is another example of an ambiguous image.
03:10Observe this image carefully and prepare to have your mind confused in the best possible way.
03:17With these green circles, I bet you can't help but see a multitude of red spheres revolving around their own little center.
03:26It's almost as if they were going side by side, isn't it?
03:29But now, hop, the green circles have disappeared.
03:32Fix the center of the image.
03:34And you will see that, although each small sphere still moves in the same way, your entire perception has changed.
03:41It looks like the pairs have suddenly formed a whole new pattern.
03:45Instead of pairs in orbit, we now have the impression of seeing two large circles of spheres intersecting, pulsating and moving around each other in a hypnotic dance.
03:56Here are three aligned cars.
03:58Which one is the biggest in your opinion?
04:01Car number 1, number 2 or number 3?
04:04Do you have the answer?
04:06If you have chosen the third one, you are not the only one.
04:09It does seem bigger than the others.
04:12But in reality, this is not correct.
04:14The answer is neither number 2 nor number 1.
04:17The three cars are actually exactly the same size.
04:20How is this possible?
04:22This is an illusion created by the angle of the image, which completely destabilizes our perception of perspective.
04:28When something is closer to us, it seems bigger to us.
04:31So when we see an image like this, our brain assumes that the cars further away must be smaller.
04:38And if there is something in the photo that makes things seem more and more distant, like the road in this case,
04:44it amplifies the effect, pushing our brain to say,
04:47wait, if this car does not shrink, it must be huge.
04:51But no, it's just an optical illusion.
04:55Have you ever seen such a weird cube?
04:57Say hello to the impossible cube.
04:59At first glance, it looks like a classic 3D cube.
05:03But the more you look at it, the stranger things get.
05:07The corners and edges are twisted in a totally illogical way.
05:11Some lines seem to go forward while others slide backwards,
05:16creating a shape that could never exist in real life.
05:19The same thing happens in this image.
05:22On the left, the two boards seem to align horizontally.
05:26But when you move your gaze to the right, the boards suddenly seem to align vertically,
05:31as if the pink was higher than the blue.
05:34The trick is to deceive your brain by making it believe that it is looking at a solid and possible object,
05:40while in reality, these impossible images break all the rules of geometry.
05:45Emma Stone is simply incredible, and her gaze is wonderfully captivating.
05:51But we can make her gaze even more hypnotic.
05:54Do you want to see that? Wow!
05:56Wouldn't we say that her eyes are bouncing directly towards you?
06:00Well, it's because of the background image.
06:03The patterns and colors give the impression that everything is moving, even if it is not the case.
06:08If you doubt it, just pause the video for a moment,
06:12and you will see that her eyes continue to get closer to you.
06:16Speaking of ocular globes, how many different colored eyes do you see here?
06:21I'll give you a little time to count them all.
06:23But I have to warn you, it's a difficult exercise,
06:26and there are probably fewer colors than you think.
06:30Well, time has passed. What is your answer?
06:34If you said 20, it's because you counted each eye as a distinct color.
06:39Or maybe you noticed that the red eye in the upper right corner
06:43is quite close to the red eye in the lower right corner.
06:46So they could be the same color?
06:49Well, let me tell you that even if you managed to spot one or two pairs of identical colors,
06:54your final answer is probably well above the correct total.
06:59Ready for the right answer?
07:01There are only five colors here, one for each column.
07:05This is a version of the illusion of Munker White.
07:09You think there are about 20 different colors in this image,
07:13because the fact of superimposing black and white lines on a shape
07:17changes our perception of colors.
07:20Now look at the center of this image. Perfect.
07:23Keep your eyes fixed on it and try not to blink.
07:26We're going to make it a little more interesting with a little bet, okay?
07:30If I can make your hand look like it's moving, I win and I can ask for a price.
07:34Otherwise, you win.
07:36But you really have to do your best.
07:39Keep focusing on the center.
07:42Now I'm going to count to three,
07:44and when I'm done, you'll look at one of your hands, okay?
07:47Here we go.
07:49One, two, three.
07:52Go ahead.
07:53Now tell me, do you feel like your hand is moving in a strange way,
07:57as if small waves were passing through it?
08:00It looks like I won the bet.
08:02And as a reward, I would like you to share this video with your friends
08:06so that they can also experience this illusion.
08:09Okay?
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