[Music] they say seeing is believing or not get ready for 11 optical illusions that will trick your eyes those who create optical illusions use combinations of colors lights or particular patterns that can really trick the brain so get ready to check your visual perception with this fun challenge and don't forget to click the subscribe button and turn on notifications to join us on the bright side of life the first one is creepy this is a famous drawing created in 1892 by Charles Alan Gilbert called all is vanity and depending on what you see first it
can come off as a little creepy most people who look at it don't even realize that the drawing is much more than it seems have you noticed anything unusual about this picture you have 10 seconds to figure it out those who look at the drawing notice either a woman sitting in front of the vanity mirror or a spooky looking skull if you've managed to spot both of them right away congratulations your visual perception is pretty impressive alright here are hidden faces here's another challenging image where you have to find something that's hidden right in plain
sight now at first glance it might look way too easy after all everybody can clearly see at least four faces in the tree branches but like any optical illusion there's a catch see how many more faces you can spot in the next 10 seconds if you found 10 faces hidden among the branches then you're an extremely observant individual some say that these faces are actually those of famous public figures can you recognize anybody share your ideas in the comments below a [Music] fair lady this gorgeous lady must be a ballerina otherwise how does she keep
rotating like that with that much grace Oh like on her toes but we're not here to discuss her artistic skills instead can you tell if she is moving in one or two directions [Music] so what do you think left-right both oh the correct answer is she is moving in the right direction cafe wall illusion the name of this illusion was inspired by a tiled wall of a cafe in Bristol like Starbucks nah but I will tell you no more for now can you tell if the dark lines are parallel to each other or incline you
have ten seconds to figure it out again it seemed like an easy question the lines are so obviously inclined it turns out that they're not let us blur the image quite a bit more now that all the small elements are completely blurred you can see the dark blue lines are actually parallel to each other well that's not fair this phenomenon is known as the cafe wall illusion it was first described more than a hundred years ago but got its name only in the 1970s when a guy named Steve Simpson noticed a similar effect on the
wall of a cafe in Bristol little black and white bricks at the intersection of wide lines make this illusion possible curved elements inside the blue lines only make this effect stronger the reason we see this distortion is that our retinal neurons and neurons in the visual cortex work together in quite a peculiar way number five for the impossible triangle meet the impossible triangle but wait what makes it so impossible you say you have ten seconds to figure it out before you hear the explanation [Music] [Music] the impossible triangle known as Penrose triangle is so called
because it can never exist in reality if it did exist it would be absolutely contrary to the rules of Euclidean geometry what is so wrong with this figure well if you follow the ball sliding on the surface of the triangle from the top point you will see that the left side is extending away and the right side is leaning towards you however they both seem to be on the same plane only an optical illusion makes it seemingly possible to the human eye now number six bicycle okay this one seems pretty plain there is a bicycle
and it's moving still there is something wrong here something mysterious can you figure out what the trick is you have ten seconds to do so what makes the bicycle move obviously the fact that the spokes in its wheels are rotating now it can't be that easy when it comes to optical illusions in fact the spokes remain in place and the colors that fill the wheels those 50 shades of grey that keeps changing this illusory motion effect is created thanks to small quick iya movements scientists are still working on figuring out how this phenomenon works to
understand the perception of motion better ah now i present to you rubik's cube what are these red and green and white lines all about it looks like something familiar but what exactly is it if you need more time just pause the video [Music] we are going to need a cylindrical mirror to get the right answer it's a Rubik's Cube this optical illusion is based on an amorphous hey I remember an amorphous she used to live down the street actually it's a form of perspective the idea of it is to transform images so distorted it is
almost impossible to guess what they are into something that makes sense using a cylindrical mirror and it only makes sense if you do it from one special point so only one person can see it at a time it would be a great way to send hidden messages it turns out this technique is not a 21st century 3d era invention it actually dates back to late Renaissance which was in the 16th century chessboard [Music] you can't play any chess with this board because it's moving all over the place or is it you have ten seconds to
do so and please try not to get hypnotized [Music] as hard as it is to believe the eyes actually remain where they were you can see it if you focus on just one of them if you stare at one point and ignore the constant movement of black and white dots it all becomes clear and dust away huh counting down from number nine upside down steve buscemi can you tell me what's wrong with steve buscemi I mean I hope Steve is perfectly fine but can you tell me what's wrong with the second picture hmm these pictures
look the same to me hit thumbs up if you think so too let's try to turn it upside down oh ho now that is way too scary it seems like my eyes tricked me again by the way here is another fun celebrity optical illusion Hermann grid illusion and scintillating grid illusion look at this black square crisscross with perpendicular white lines the white dots situated at the intersections of the grid shift their color from white to gray and back when you concentrate on a particular dot you see that it's white but as soon as your attention
wanders the dot turns gray that's the Hermann grid illusion amazing isn't it we can take this illusion one step further by positioning white dots at the intersections of gray lines all placed on top of the black background look at this image attentively and you'll notice black dots starting to pop up at the intersections of the grid doesn't it create a scintillating effect another name for this illusion is a simultaneous light contrast illusion as you perceive the dots as white at one moment and then almost immediately you see them as black how is it going have
you managed to spot this effect yet if not take your time you can pause the video and observe this illusion for a bit longer so why do your senses let you down by making you see gray or black instead of white actually this illusion demonstrates one of the most important principles of human perception you don't always see things for what they really are the thing is that the retinal cells in your eyes act as light receptors when only one receptor gets illuminated it perceives more light than when its colleagues are also illuminated this prevents the
firing of nearby receptors as a result the effect only gets transmitted laterally let's see how it works with the Hermann grid illusion the white lines are arranged in such a way that there's more light around the intersections then along the lines themselves thus the dots at the intersections are more inhibited and you see darker spots are you thoroughly impressed yet well the best is yet to come finally consider this one boxes it takes one large box and one little box and some magic to make this illusion possible I will leave some space to your imagination
here let's discuss it in the comment section how is it possible for the little box to be outside inside and part of the large box at the same time so how many optical illusions did you manage to crack tell us in the comments below now don't forget to give this video a like share it with your friends and click subscribe to stay on the bright side of life [Music] you you
