List of All Illusions
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A
The afterimage illusion is a type of visual illusion in which an image continues to appear in the observer’s visual field after the original stimulus has been removed.
An ambigram is a typographical design that can be read as one or more words, not just in its normal orientation but also when it is rotated, flipped or viewed from a different angle.
Aliasing can be considered an illusion in the sense that it creates an image or signal that is different from the way it actually is.
This results in the creation of artifacts and distorted images that appear different from the original signal.
In the All The Same Color Illusion, every single shape is the exact same color, but the background changes creating the illusion that they are different colors.
The Ames Room illusion is a visual illusion in which a room appears distorted, causing people or objects within it to appear differently sized.
This Ambiguous Columns Illusion is a classic of figure-ground perception illusion (like the Rubin Vase), which works because of the human visual system’s ability to separate an object from its background.
This “Ambiguous Walk” combines elements of Ambiguous illusions and Rorschach Inkblots to create a cool illusion.
The Ames Window (or trapezoid) is a flat object that seems to be a rectangular window but is actually a trapezoid.
Anamorphic street art is a form of street art that uses optical illusion to create a three-dimensional image when viewed from a specific angle.
Anamorphosis is a technique in art and optics that involves creating an image that appears distorted or irregular when viewed from one perspective, but appears normal or regular when viewed from another perspective or with the use of a specialized tool, such as a mirror or a cylindrical lens.
Anomalous motion illusions are visual illusions that occurs when an object appears to move in a way that is unexpected or impossible based on the laws of physics.
Apparent motion is the visual illusion of motion created by the rapid presentation of a sequence of still images. It is based on the idea that our eyes and brain perceive a series of still images as a continuous stream of motion.
The illusion is created by an image of a cylinder that is viewed from an angle, which can appear to be either a cylinder or two faces in front of a cylinder.
An anorthoscope is a type of optical device used for viewing anamorphic images, which are distorted images that appear normal when viewed through a special lens.
Are They Climbing the Stairs in this illusion? No, in fact, they aren’t moving at all. The stick figures aren’t moving or changing size at any point in the video.
The autokinetic effect is an optical illusion in which a small, stationary point of light appears to move in the dark. The effect is caused by the visual system’s inability to accurately judge the distance of the point of light, which leads to the perception of movement.
An autostereogram is a type of image that appears to be a flat 2D image when viewed normally, but when viewed with a special technique, it appears to be a 3D image with depth and perspective.
B
The illusion is created by the interaction of the contrasting colors of the stripes with the motion of the pole, which can make it appear to be moving in a spiral pattern.
The Belt of Venus Illusion is a natural phenomenon that creates a beautiful pinkish glow in the sky just after sunset or just before sunrise. It is also known as the “anti-twilight arch” or the “Earth’s shadow,” and it is named after the Greek goddess of love, Venus.
The Benham’s top illusion is the visual effect created when the top is spun, in which the pattern appears to change colors.
The beta movement illusion is a visual illusion in which a series of static images, such as a filmstrip or flipbook, appears to be in motion when viewed in rapid succession.
The Beuchet Chair Illusion is an optical illusion that involves a drawing or a photograph of a chair that appears to change shape and orientation as the viewer’s perspective changes.
The Bezold Effect is a phenomenon in color theory where a change in one color can cause the perception of the surrounding colors to change as well.
Binocular rivalry is a phenomenon that occurs when slightly different images are presented to each eye simultaneously.
The brain is unable to fuse the two images into a single, coherent image, and instead alternates between perceiving one image and then the other.
It is a visual illusion that features a circular black shape on top of a black and white checkerboard pattern. When viewed, the black blog appears to “bleed” into the surrounding space, creating the illusion of a black blob that is growing.
Illusory motion is a perceptual phenomenon in which a stationary image appears to be moving. It occurs when visual cues in the image trick the brain into perceiving motion, even though there is no actual movement taking place.
The Blue Flash illusion is a rare optical phenomenon that occurs just as the sun rises or sets over the horizon. It is a brief, intense burst of blue light that appears for just a second or two, and is usually only visible under very specific conditions.
In this amazing boxes aren’t moving illusion, the boxes do not move at all. The boxes aren’t moving illusion is one that uses a few techniques to create the impression of motion where there is actually none.
In the Breathing Square Illusion, the blue square appears to pulsate or breath, when in reality it is just spinning while being partially occluded.
The Brocken Spectre Illusion, also known as Brocken bow or mountain specter, is a rare and fascinating optical phenomenon that occurs when a person standing on a mountain or a high ridge sees their enlarged shadow cast onto a cloud bank or fog bank below them.
C
The Cafe Wall Illusion is a geometric optical illusion that is created by the alignment of parallel lines in a checkerboard pattern. The parallel lines appear to be tilted or slanted, even though they are actually straight.
Checkerboard bulge illusion has a few illusion types at play in here, but the effect is most similar to that of the famous Cafe Wall illusion.
The Checker Shadow Illusion is created by a checkerboard pattern composed of squares with different luminance values, the squares that are not directly illuminated by the light source appear darker than the illuminated squares, creating the illusion of shadows.
The Cheshire Cat Illusion is a type of optical illusion that involves a partial disappearance of an object. It is named after the famous character from Lewis Carroll’s “Alice’s Adventures in Wonderland,” who famously disappears leaving only his grin behind.
The Chevreul illusion is created by the way the brain perceives edges of an object. When the edges of an object are surrounded by a contrasting color, the edges appear to be a different color than they actually are.
The Chromatic Motion Illusion is a type of anomalous motion illusion that involves a stationary object appearing to move or change color due to changes in the surrounding colors.
The Chubb illusion is based on the perception of brightness and can be observed when a small bright patch is surrounded by a larger dark area, the small bright patch will appear brighter than the same patch surrounded by a bright area.
This Chromatic Adaptation Illusion allows you to see a black and white image in full color.
Chromostereopsis is an optical illusion that involves the perception of depth and three-dimensionality based on color information. It is caused by the differential refraction of light of different wavelengths, known as chromatic aberration, as it passes through a lens.
The circles in these illusion aren’t moving at all and they stay the same size through out the video.
Can you spot all 16 circles?
This isn’t a bunch of squares or rectangles, it’s really 16 circles on a striped background.
These Color Afterimage illusions occur when an image continues to appear in our visual field after we stop looking at it.
In these Color Assimilation Grid Illusions, all the images are completely black and white except for some colored lines superimposed on the original image.
A color constancy illusion is a type of visual illusion in which a color appears to be different when viewed in different contexts.
Illusory motion is a perceptual phenomenon in which a stationary image appears to be moving. It occurs when visual cues in the image trick the brain into perceiving motion, even though there is no actual movement taking place.
In this Concave or Convex Illusion the circles on the left all appear to be convex and all the circles on the right appear to be concave, but they are essential the same
The Cornsweet illusion is a classic example of a brightness illusion, which is an illusion in which two areas that are physically the same brightness appear to be different in brightness.
When viewed from a distance, the illusion is that the crater or it’s edges appear to be raised.
D
The Delboeuf illusion is a perceptual illusion in which the perceived size of a circle is affected by the size of the surrounding circles. The central circle surrounded by larger circles appears smaller than the same central circle surrounded by smaller circles, even though the central circle is identical in both cases
The dress illusion is a viral phenomenon that occurred in 2015, where a photograph of a dress caused debate and disagreement over the actual colors of the garment, which appeared to some people as black and blue and to others as white and gold.
The duck-rabbit illusion is an optical illusion that is an image that can be perceived as either a duck or a rabbit depending on how the viewer looks at it.
In this dual axis illusion, the shape that appears to spin horizontally or vertically depending on how you look at it.
To make this work, you’ll need to stare at the white spot in the center and then move your face closer to the screen. When you move forward, the white spot will expand and increase in luminescence.
E
The Ebbinghaus illusion (also known as Titchener circles) is a perceptual illusion in which the perceived size of a central circle is affected by the size of the surrounding circles. The central circle appears smaller when surrounded by larger circles, and larger when surrounded by smaller circles.
The Ehrenstein illusion is a type of optical illusion that involves the perception of curved lines as being more curved than they actually are.
F
Fata Morgana mirages create the illusion of distorted or elongated images of distant objects, such as ships or islands, often appearing to float above the horizon.
Figure-ground ambigrams are words or phrases that can be read in more than one way, depending on how you interpret the foreground and background of the design.
Figure ground illusions are a type of perceptual illusion that play with our ability to distinguish between the figure, or the object of focus, and the ground, or the background.
In the filled space illusion (or Oppel–Kundt illusion) The line B is equidistant between A and C but appears closer to A.
This is because the filled space between B–C appears larger than the unfilled space between A–B.
Filling-in, also known as Troxler’s fading, is a phenomenon in which a stationary visual stimulus eventually disappears from perception, even though it is still present in the visual field.
The flash lag illusion is a visual illusion that is based on the perception of the temporal relationship between a moving object and a flash of light.
The Floating Boat Illusion occurs when the water is exceptionally clear and calm, creating an optical illusion that makes a boat look as if it is floating in mid-air or hovering above the water’s surface.
In these illusions, artists have used principles of forced perspective and a touch of anamorphic street art to create an amazing experience.
Forced perspective is a technique used in photography, architecture, and other visual arts to manipulate the perception of the size and distance of objects.
The illusion is created by the placement of a series of curved lines that appear to be spiraling inwards, with the center of the spiral appearing to be moving.
G
This glory illusion is an optical phenomenon that occurs when sunlight is scattered backwards by small water droplets in the atmosphere, such as in clouds or mist.
Gravity hills, also known as magnetic hills or mystery hills, are areas where the layout of the land creates the illusion that objects, such as cars, are rolling uphill instead of downhill.
The Green Flash illusion is a rare optical phenomenon that occurs just as the sun rises or sets over the horizon. It is a brief, intense burst of green light that appears for just a second or two, and is usually only visible under very specific conditions.
H
The Helmholtz Illusion. The square of horizontal lines appears to be taller and narrower than the identical square of vertical lines.
The Hering illusion is a visual illusion that involves the perception of curved lines as being bowed inwards or outwards. In the illusion, the red lines appear to curve. In realty, the red lines are perfectly straight
The Hermann Grid Illusion is created by the way the brain perceives intersections of lines. When the intersections of a grid of lines are viewed, small gray dots appear at the intersections, even though they are not actually there.
The hollow face illusion is a type of optical illusion where a concave mask appears as if it is a convex object.
Horsemaning is a photography trick that creates an illusion of a person’s head being detached from the body.
The “My husband and father-in-law” illusion is a variation of the “My wife and my mother-in-law” illusion, which is an optical illusion that is an image of a man’s face that can also be perceived as an older man’s face.
These Hyperboloid Optical Illusions involves a sphere appearing to rotate around a hyperboloid, when in fact the objects are all static.
I
Illusion knitting is a style of knitting where the pattern created appears to be different from the actual knit structure.
Illusory contours are visual stimuli that appear to form a boundary or shape, but in reality do not exist as a solid object.
With Illusory motion, static image appears to be moving due to the interaction of color contrasts, shapes, and position.
The impossible cylinder is an impossible shape resembling a cylinder similar to the Penrose triangle, impossible cube, and the impossible trident.
The impossible cube is an optical illusion that depicts a three-dimensional object that is physically impossible to construct.
The impossible trident is a three-pronged impossible shape resembling a trident.
It is usually depicted as a three-pronged fork with each prong appearing to be a continuation of the next, creating an impossible shape.
An infinity mirror is a type of optical illusion created by reflecting a source of light repeatedly between two parallel mirrors, creating a seemingly infinite series of reflections that fade into the distance.
The irradiation illusion is an optical illusion where the brightness or perceived size of an object can be altered by the presence of surrounding stimuli.
The Ishihara Illusion is a type of optical illusion that uses a series of colored dots or circles to create the illusion of a hidden image or figure.
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The Jastrow illusion is created by two identical shapes, usually circles, placed side by side, and one appears to be much larger.
K
The Kanizsa triangle is an example of an “amodal completion” illusion, in which the brain fills in missing information to complete an object or shape. In this case, the brain completes the triangle by connecting the three white crescents of the circles together.
The kinetic depth effect refers to the perception of three-dimensional (3D) depth and solidity in an object that is produced by its motion, relative to the observer.
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In this illusion, although the images are duplicates, one has the impression that the tower on the right leans more, as if photographed from a different angle.
M
The Mach band illusion is a perceptual phenomenon that occurs when the human visual system processes gradients of luminance.
The McCollough effect is a phenomenon of visual perception where an individual perceives a grating (grid of black and white bars) as having color, after prolonged viewing of a colored grating.
A mirage is a type of optical illusion caused by the bending of light in a layer of hot air, which can make distant objects appear to shimmer or float above the ground.
The missing square puzzle is presented in such a way that the surrounding rectangles appear to be the same size, but when the lines of the squares are measured, it becomes clear that they are not.
A Möbius strip, named after the German mathematician August Möbius, is a one-sided non-orientable surface, which can be created by taking a rectangular strip of paper and giving it a half-twist, then joining the two ends of the strip together.
The Moiré pattern illusion is an optical illusion that is created by the interaction of two or more superimposed patterns. A Moiré pattern is formed when two regular patterns, such as grids or dots, are overlaid on each other, creating an interference pattern.
The Mona Lisa Illusion is an optical illusion that occurs when viewing an image of a person’s face. It is named after the famous painting by Leonardo da Vinci, the Mona Lisa, which is known for its enigmatic smile.
Monocular rivalry is a phenomenon that occurs when different images are presented to each eye simultaneously.
The brain is unable to process both images at the same time, so it alternates between perceiving one image and then the other.
The Monroe-Einstein illusion is a visual illusion that features a photograph of two people, one of whom is Albert Einstein and the other is Marilyn Monroe.
The moon illusions involves the perception of the Moon appearing larger when it is near the horizon compared to when it is high in the sky.
The Motion Aftereffect (also known as the Waterfall Illusion) is a visual illusion experienced after viewing a moving visual stimulus, and then fixating on a stationary stimulus. The stationary stimulus appears to move in the opposite direction to the original stimulus.
The Motion Aftereffect (also known as the Waterfall Illusion) is a visual illusion experienced after viewing a moving visual stimulus, and then fixating on a stationary stimulus.
In this motion blinding illusion, at first, the two sets of lines appear to move independently of each other. However, as soon as the squares are added, all of the lines appear to be moving in a coordinated fashion.
After focusing on the green dot for several seconds the yellow dots disappear
Motion-induced blindness (MIB) is an optical illusion that occurs when a stationary pattern or image is presented in the presence of a moving pattern or image. The stationary pattern or image appears to disappear or fade, even though it is still present, this phenomenon is called motion-induced blindness.
In this Cool Moving Color Contrast Illusion the moving ball never changes color. It appears to change because the background changes. This illusion is sometimes called the Chromatic Motion Illusion as well.
The Müller-Lyer illusion consists of two lines of equal length, with arrows at each end pointing either inward or outward. The line with the inward-pointing arrows appears shorter than the line with the outward-pointing arrows, even though they are actually the same length.
Multistable perception refers to the phenomenon in which an ambiguous stimulus can be perceived in multiple, equally valid ways, and one’s perception of the stimulus can switch spontaneously or be influenced by various factors.
In the examples, the shapes are all the exact same color. They only appear different back on the contrasting background colors.
The Münsterberg illusion is a geometric optical illusion that is created by the alignment of parallel lines in a checkerboard pattern. It is very similar to the Cafe Wall Illusion.
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The Necker cube is an optical illusion that features a simple wireframe drawing of a cube. The cube appears to switch back and forth between two different orientations.
The negative photo illusion is a type of optical illusion that is created when a person views a negative image of a photo.
This illusion can cause the brain to perceive the image as if it were a positive image, even though it is inverted.
The neon-like color spreading illusion refers to the visual phenomenon where an area of color appears to spread or “bleed” beyond its intended boundaries.
In the No Curved Lines Illusion, you’ll see both straight and curved lines. But as soon as you try to focus on a curved line, it will turn into a straight line and curved lines will pop up elsewhere.
The Numerosity adaptation effect refers to a phenomenon in which the perceived number of objects in a display is altered after exposure to a differently sized display.
O
In the image, both half circles are the exact same size, but the one on the left appears larger.
This Amazing Moving Octopus Illusion by Artist Pearl Whitecrow Brown uses illusory motion to create the perception that the colorful octopus is actually moving.
In the Oppel–Kundt (or filled space illusion) The line B is equidistant between A and C but appears closer to A.
This is because the filled space between B–C appears larger than the unfilled space between A–B.
Op Art, short for Optical Art, is a style of art that emerged in the 1960s and is characterized by the use of optical illusions, geometric shapes, and bright colors to create the impression of movement, depth, and visual vibration.
The Orbison illusion consists of a two dimensional shape such as a square or circle, that when surrounded by a pattern of radiating lines, appear to be distorted or flattened.
The Ouchi illusion is an optical illusion that involves a set of parallel lines that appear to be curved or wavy, even though they are actually straight.
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Pareidolia is a psychological phenomenon in which the brain unconsciously perceives recognizable patterns or objects in random or ambiguous stimuli.
Pepper’s Ghost is an optical illusion used in theater and theme parks to create ghostly or translucent apparitions.
Persistence of vision is the phenomenon by which the brain continues to perceive an image even after the image is no longer present.
Phantograms are 3D images that appear to float in space and can be viewed without special glasses or other aids. The term “Phantogram” is derived from the Greek words “phaneros,” meaning “visible,” and “gramma,” meaning “something written or drawn.”
The Phi phenomenon is the illusion of movement created by the rapid succession of static images or light sources. It is the perceptual phenomenon that explains how the human brain perceives motion when presented with a sequence of still images or light sources that are displayed in rapid succession.
The Pinna Illusion is created by displaying a pattern of light and dark bars on a computer screen. The pattern appears to rotate, even though it is actually stationary.
The Pinna-Brelstaff Illusion is a visual illusion that demonstrates the role of context and the importance of the visual cues provided by the surrounding environment in our perception of an object. It is an adaptation of the original Pinna illusion.
The Pinna Overlapping Illusion is really a set of concentric circles, but the illusion makes it appear that the circles overlap.
Penrose figures are impossible objects that were first described by the mathematician and philosopher Roger Penrose in the 1950s.
The Penrose stairs, also known as the impossible staircase or the Penrose steps, is a visual illusion in the form of an impossible object created by the mathematician and physicist Roger Penrose.
The Penrose triangle, also known as the Penrose tribar, is an optical illusion that depicts a three-dimensional object that is physically impossible to construct.
In this Perfect Squares Illusion every one of the red boxes is a perfect square.
In peripheral drift illusions, the image or pattern appears to move or drift, even though it is actually stationary. This movement is caused by the brain’s attempt to interpret the image or pattern, which is often complex or ambiguous.
The movement can be in any direction, such as horizontally, vertically, or diagonally.
The phenakistiscope is a mechanical optical illusion device that creates the illusion of motion by rapidly displaying a sequence of still images in quick succession.
Primrose Field by Kitaoka AkiyoshiIn is a peripheral drift illusion where the image or pattern appears to move or drift, even though it is actually stationary.
This movement is caused by the brain’s attempt to interpret the image or pattern, which is often complex or ambiguous.
The Poggendorff illusion is a visual illusion in which the brain perceives a diagonal line as being interrupted by an object, even though the line is actually continuous.
The illusion is created by the misalignment of two parallel lines that are intersected by a third line at a certain angle.
The Ponzo illusion is a type of visual illusion in which a pair of parallel lines, or a horizontal bar, appear to be of different lengths based on the presence of a converging or diverging set of lines, often resembling the converging parallel lines of a road or railway track, placed above and below them.
The face forward or to the side illusion is another type of optical illusion that involves a two-dimensional image, usually a face, that appears to switch between looking straight ahead and looking to the side, depending on how you view it.
Pulsating Illusions that create a sense of movement or pulsation in the visual field, even when there is no actual motion occurring. These types illusions can be caused by a variety of visual stimuli, including patterns, colors, and shapes.
This Pulsating Square Illusion creates the appearance that the blue square is pulsating when the yellow squares are large. But, when the yellow squares are small, you can clearly see that the blue square isn’t pulsating at all.
In the Great Pyramid of Giza illusion, when viewing the Great Pyramid from above, the illusion can occur where, the pyramid can appear to be a hollow column or tower, rather than a solid pyramid.
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R
In this Reverse Spokes Illusion, the wheel is presented as a series of black and white alternating segments.
In realty, the spokes never move, but the changing hues make it appear that they do.
Rhombille tiling is a tiling pattern of a plane with rhombus-shaped tiles that can be used to create illusions.
Rorschach inkblots are not considered an illusion in the traditional sense, but the process of interpretation can involve the phenomenon of pareidolia, where the person sees recognizable patterns or objects in the ambiguous inkblots. In this way, they can be considered illusory.
The Rotating Horse Optical Illusion is a visual illusion in which a static image of a horse appears to be rotating on its own.
The rotating snakes is a peripheral drift illusion that consists of a grid of shapes, with some of them appearing to be rotating or undulating. The illusion is created by the interaction of the shapes with the neural processing of the visual system.
The Rubin vase, also known as the Rubin face or the figure-ground vase, is a famous optical illusion in which the image of a vase can also be perceived as two faces in profile looking at each other.
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In the Sander Illusion, the diagonal line on the left appears to be considerably longer than the diagonal line on the right, but the lines are the same length.
Dynamic versions of the classic Müller-Lyer illusion that consists of two lines of equal length, with arrows at each end pointing either inward or outward. The line with the inward-pointing arrows appears shorter than the line with the outward-pointing arrows, even though they are actually the same length.
The Schröder Staircase is an optical illusion that features a drawing of a staircase. The staircase appears to be either ascending or descending, depending on how the brain interprets the angles of the lines.
The scintillating grid illusion is also known as the “scintillating checkerboard illusion” and it is a variation of the Hermann grid illusion.
These cool Scrolling Illusions have an illusory effect when they are moving. If you scroll up and down the screen, you’ll see the shapes move or see new shapes appear.
The shake your head illusion is a type of visual illusion that is created when an image is viewed while the head is rapidly oscillating
The Shepard elephant illusion is an optical illusion that was created by the artist David H. Shepard. The illusion is a black-and-white line drawing of an elephant that appears to be three-dimensional and in motion, despite being a flat, static image.
The Shepard table illusion is a type of perceptual illusion that is created by a table-like structure that appears to change its shape depending on the viewing angle.
Silencing is a visual phenomenon where objects that change in luminance, hue, size, or shape appear to stop changing when they move. They “freeze” in place.
The simultaneous contrast illusion is a visual effect that occurs when the perception of a color is affected by the colors of the surrounding area.
The “Size-Weight Illusion” is a perceptual phenomenon in which people perceive an object to be heavier when it is larger in size, even when the objects actually have the same weight.
The spinning dancer illusion is a visual illusion that depicts a silhouette of a dancer spinning clockwise or counterclockwise. The direction of the dancer’s spin can appear to change depending on the viewer’s perception.
This Spinning Spiral Illusion uses the phenomenon peripheral drift to create the illusion of motion. When you view the image directly, there doesn’t appear to be much movement. However, when you are looking close, but not directly at the image (from your periphery) the image will seem to spin.
This spiral illusion is an optical illusion that is characterized by the appearance of a spiral pattern made up of concentric circles.
The “Stepping Feet Illusion” is a visual illusion that involves an optical illusion of the apparent movement of a static image.
The Storseisundet Bridge Illusion uses forced perceptive to create this crazy effect.
The stroboscopic effect is a visual phenomenon that occurs when a rapidly flashing light is used to illuminate a moving object.
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This is the Tennis Ball Illusion. It’s also known as the “curvature blindness illusion”.
You have to check out this video. The balls are all moving in a straight line.
Tessellation is a technique used in mathematics, art, and architecture where a two-dimensional plane is covered with repeating shapes without any gaps or overlaps.
It involves the perception of rapid successive presentation of a sequence of three disks as a single, moving object.
The Thatcher effect is a visual illusion in which it becomes difficult for the brain to perceive the deformities in an upside-down face. The effect was named after Margaret Thatcher, the former British Prime Minister, who was used as an example in early studies of the phenomenon.
A Thaumatrope is a simple optical toy that was popular in the 19th century.
It consists of a disk with a picture or design on each side that is attached to two strings. When the strings are spun rapidly, the two pictures appear to merge into a single, continuous image.
The Three Hares is a symbol consisting of three hares or rabbits chasing each other in a circular pattern. It is found in various cultures dating back to ancient China and in medieval churches in Europe.
The T illusion, also known as the Vertical–horizontal illusion, is a visual perception illusion that involves a T-shaped figure with a horizontal bar and a vertical bar. The brain perceives the vertical bar as being longer than the horizontal bar, even though they are the same length.
The Titchener circles illusion (also known as Ebbinghaus) is a perceptual illusion in which the perceived size of a central circle is affected by the size of the surrounding circles. The central circle appears smaller when surrounded by larger circles, and larger when surrounded by smaller circles.
The tilt illusion is a visual perception phenomenon in which the perceived inclination of a line or shape is different from its actual inclination.
The Todorovic illusion is a visual illusion where a central object or space appears to be surrounded by a halo of light, even though no such halo is present in the image.
There is a Todorovic illusion that is a version of White’s illusion
The gray region bordered mostly by white appears lighter than the identical region bordered mostly by black.
The transformation illusion is a type of optical illusion that occurs when a static image appears to change over time.
Troxler’s fading, also known as Troxler’s effect, is a phenomenon in which a stationary visual stimulus eventually disappears from perception, even though it is still present in the visual field.
In this Cool Troxler’s Fading Illusion, stare at the image below and eventually the colors will completely fade away. This is a great example of the phenomenon known as Troxler’s fading.
Trompe-l’œil is a French term that means “trick the eye.”
It refers to a style of art that uses realistic depictions of three-dimensional objects to create the illusion of depth and a life-like appearance.
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The Uncle Sam illusion is a type of optical illusion in which the eyes and finger of the famous picture appear to follow the viewer. This illusion is sometimes referred to as the “following eyes” or “gaze following” illusion.
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A mechanical optical illusion where pieces which can be rearranged to show different versions that have different interpretations including more/less or smaller/larger pieces
Vector Ball Optical Illusions are created by a series of lines that are arranged in a specific way to create the illusion of a rotating ball. The lines are positioned in such a way that they give the impression of shading and depth, which creates the perception of a three-dimensional object.
The Vertical–horizontal illusion, also known as the T illusion, is a visual perception illusion that involves a T-shaped figure with a horizontal bar and a vertical bar. The brain perceives the vertical bar as being longer than the horizontal bar, even though they are the same length.
The Vista Paradox refers to an optical illusion that occurs when observing the portico of the Palazzo Bentivoglio from the Cannocchiale di Bologna, which is a long telescope installed on the terrace of the Basilica di San Petronio in Bologna, Italy.
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The wagon wheel illusion is a visual illusion in which a rotating wheel appears to be rotating in the opposite direction or at a different speed than its actual rotation.
The watercolor illusion is a type of optical illusion that is created by the perception of color spreading beyond the boundaries of the object that is generating it.
The Waterfall Illusion (also known as the Motion Aftereffect) a visual illusion experienced after viewing a moving visual stimulus, and then fixating a stationary stimulus. The stationary stimulus appears to move in the opposite direction to the original stimulus.
White’s illusion is a visual phenomenon in which two identical gray bars are placed on a background of alternating black and white stripes.
The identical gray bars appear to be different shades of gray, with the one on the white stripes appearing lighter than the one on the black stripes.
The “My wife and my mother-in-law” illusion is an optical illusion with an image of a young woman’s face that can also be perceived as an older woman’s face.
The Wundt illusion is a visual illusion in which two lines that are parallel appear to be converging or diverging. It is believed to be caused by the brain’s tendency to perceive the angles of lines in relation to other lines or shapes in the visual field. Has a similar effect as the Hering Illusion
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Z
A zoetrope is a mechanical illusion device that creates the illusion of motion by rapidly displaying a sequence of still images in quick succession.
The Zöllner illusion is a visual illusion in which parallel lines appear to be angled due to the presence of intersecting lines.
The perception can be explained by the brain’s tendency to group lines together based on their similarity in direction and spacing, which can lead to an overestimation of the angle between the parallel lines.