Daily · 17 August 2023
Top 100 captivating optical illusions
Ranked from 100 down to 1. Generated by /lad, illustrated by /iad.
#1
The Spinning Dancer
The Spinning Dancer is an optical illusion that appears to be a female figure spinning clockwise or counterclockwise. The figure appears to be spinning, but it is impossible to tell which direction she is spinning in. The illusion has been used to test the viewer's perception of motion and
#2
The Hermann Grid
The Hermann Grid Illusion is an optical illusion that was first described by Ludimar Hermann in 1870. It consists of a grid of white lines on a black background, with a gray spot in the center. When viewed from a distance, the gray spot appears to flicker or move
#3
The Kanizsa Triangle
The Kanizsa Triangle is an optical illusion that was first described by Italian psychologist Gaetano Kanizsa in 1955. It consists of three Pac-Man shapes arranged in a triangle with a white space in the middle. When viewed, the triangle appears to be a solid shape with a
#4
The Impossible Trident
The Impossible Trident is an ancient artifact of immense power. It is said to have been forged by the gods themselves and is capable of granting its wielder tremendous strength and control over the sea. Legends say that it can be used to control the tides, summon storms, and even raise sunken
#5
The Penrose Triangle
The Penrose Triangle is an impossible object created by the Swedish artist Oscar Reutersvärd in 1934. It is an optical illusion that appears to be a triangle, but is actually an impossible shape that cannot exist in the real world. It has been used in various works of art and
#6
The Café Wall Illusion
The Café Wall Illusion is an optical illusion that was first discovered in the late 19th century. It is an example of an ambiguous figure, where the same image can be interpreted in multiple ways. The illusion is created by a grid of alternating black and white tiles, with slight variations in the
#7
The Zöllner Illusion
The Zöllner Illusion is an optical illusion that was first described by German psychologist Johann Karl Friedrich Zöllner in 1860. It consists of a set of parallel lines that appear to be slanted when intersected by converging lines. The illusion is caused by the brain perceiving
#8
The Poggendorff Illusion
The Poggendorff Illusion is an optical illusion that occurs when two straight and parallel lines are interrupted by a third line. When viewed, the two lines appear to be misaligned and curved, even though they are actually straight and parallel. This illusion was first described by Johann Karl Friedrich Z
#9
The Ponzo Illusion
The Ponzo Illusion is an optical illusion that was first described by the Italian psychologist Mario Ponzo in 1913. It is an example of an ambiguous figure that can be interpreted in two different ways. The illusion is created by two parallel lines that cross a series of converging lines. Depending
#10
The Hering Illusion
The Hering Illusion is an optical illusion in which two straight and parallel lines appear to be bowed outwards. It was first described by the German physiologist Ewald Hering in 1861 and is still used today to study visual perception. The illusion is created by the use of two sets
#11
The Ebbinghaus Illusion
The Ebbinghaus Illusion is an optical illusion that was discovered by German psychologist Hermann Ebbinghaus in 1885. It is an example of an ambiguous figure, and it is created by two circles of different sizes, one of which is surrounded by a larger circle of the same size.
#12
The Müller-Lyer Illusion
The Müller-Lyer Illusion is a classic optical illusion that has been studied for over a century. It consists of two lines of equal length, one with inward-pointing arrows at the end and the other with outward-pointing arrows. Despite being the same length, the line
#13
The Jastrow Illusion
The Jastrow Illusion is an optical illusion that was discovered by American psychologist Joseph Jastrow in the late 19th century. It is an illusion of perception in which two identical figures appear to be different sizes when placed side-by-side. This illusion is often used to demonstrate the
#14
The Bezold Effect
This guide provides an in-depth look at the Bezold Effect, a phenomenon that explains how the perception of color is affected by the surrounding colors. It covers topics such as the Bezold-Brücke shift, the simultaneous contrast effect
#15
The Checker Shadow Illusion
This optical illusion is a classic example of how our brains can be tricked by our eyes. The Checker Shadow Illusion is a two-dimensional image that appears to be three-dimensional. It consists of a checkerboard pattern with alternating light and dark squares, and a shadow cast across the
#16
The Lilac Chaser
The Lilac Chaser is a captivating visual illusion that has been around since the late 19th century. It involves a sequence of rapidly alternating images of a single lilac flower and a field of lilacs. When viewed for a few seconds, the single flower appears to move across the field
#17
The Spinning Dancer
The Spinning Dancer is an optical illusion that appears to be a female figure spinning clockwise or counterclockwise. The figure appears to be spinning, but it is impossible to tell which direction she is spinning in. The illusion has been used to test the viewer's perception of motion and
#18
The Ames Room
The Ames Room Illusion is an optical illusion that creates an optical illusion of a distorted room. It was first described by American ophthalmologist Adelbert Ames, Jr. in 1934. The illusion is created by placing two walls at an angle to each other, and then placing two
#19
The Hollow-Face Illusion
The Hollow-Face Illusion is an optical illusion that appears to show a hollow face when viewed from certain angles. It is created by a flat, two-dimensional image that appears to be a three-dimensional face when viewed from certain angles. The illusion is created by the way the light reflects
#20
The Impossible Cube
The Impossible Cube is an optical illusion that appears to be a three-dimensional cube, but is actually a two-dimensional image. It is a paradoxical shape that defies logic and challenges the viewer to try to comprehend it. The Impossible Cube is a fascinating visual puzzle that will leave
#21
The Necker Cube
The Necker Cube is a classic visual puzzle that has been around since the 19th century. It consists of a two-dimensional line drawing of a cube, which can be interpreted in two ways. The challenge is to switch between the two interpretations, and to try to
#22
The Rubin Vase
The Rubin Vase is a classic optical illusion that has been around since 1915. It is a two-dimensional image of a vase that can also be seen as two faces in profile looking at each other. The Rubin Vase is a great example of how our brains can interpret the same
#23
The Impossible Staircase
This is a thrilling puzzle game that will test your problem-solving skills. You must navigate a seemingly impossible staircase, full of tricky obstacles and mind-bending challenges. As you progress, you will encounter increasingly difficult puzzles that will require you to think outside the box. With each step,
#24
The Fraser Spiral Illusion
The Fraser Spiral Illusion is an optical illusion created by British psychologist Sir David Fraser in 1908. It is a two-dimensional pattern of concentric circles that appear to be a three-dimensional spiral. When viewed from a certain angle, the circles appear to be connected and form a continuous spiral.
#25
The Motion Aftereffect
This paper will explore the phenomenon of visual perception known as the motion aftereffect. This phenomenon occurs when an observer views a moving object and then looks away, perceiving the stationary world as moving in the opposite direction. We will examine the
#26
The Waterfall Illusion
This unique optical illusion is a mesmerizing visual experience. It features a cascading waterfall of colorful shapes and patterns that seem to move and flow in an endless cycle. As you stare at the image, the shapes appear to move and shift, creating a mesmerizing and hypnotic effect. The
#27
The Rotating Rings
This description explores the fascinating phenomenon of the rotating rings of Saturn. Discovered by Galileo Galilei in 1610, the rings of Saturn are composed of billions of pieces of ice and dust particles, ranging in size from micrometers to meters. As Saturn rotates, the rings
#28
The Floating Finger Illusion
This optical illusion is an interactive visual experience that will leave you mesmerized. It features a single finger that appears to be floating in mid-air, with no visible support. The finger appears to move and sway as you look at it, creating a captivating and mesmerizing effect. It
#29
The Flashed Face Distortion Effect
The Flashed Face Distortion Effect is a phenomenon in which a person's face appears to be distorted when briefly exposed to a face flashed on a screen. This effect has been studied extensively in the field of psychology, as it has implications for how people process and recognize faces. The effect has
#30
The Troxler Effect
The Troxler Effect is a phenomenon in which a stationary visual stimulus, such as a dot or a circle, gradually fades away and disappears from view when stared at for a prolonged period of time. It was first described by Swiss physician and philosopher Ignaz Paul Vital Troxler in
#31
The Peripheral Drift Illusion
The Peripheral Drift Illusion is an optical illusion that occurs when a person looks at a pattern of moving dots and perceives them as moving in a single direction, even though the dots are actually moving in multiple directions. This illusion is created by the brain's tendency to group similar objects together
#32
The Munker-White Illusion
The Munker-White Illusion is an optical illusion that was discovered in the 1950s by German psychologist Hans Munker. It is a type of ambiguous figure, which means that it can be seen in two different ways. The illusion is composed of two overlapping circles, one black and one white
#33
The Wundt Illusion
The Wundt Illusion is an optical illusion created by German psychologist Wilhelm Wundt in the late 19th century. It consists of two vertical lines of identical length, but when placed side by side, the line on the right appears longer than the line on the left. This illusion demonstrates
#34
The Thatcher Effect
The Thatcher Effect is a phenomenon in which a person's perception of a face is altered when the face is presented upside down. This effect is named after the former British Prime Minister Margaret Thatcher, whose face was famously used in an experiment to demonstrate the effect. The Thatcher Effect has been studied
#35
The Blivet Illusion
The Blivet Illusion is an optical illusion that has been baffling viewers since its first appearance in the early 20th century. It is a three-dimensional object that appears to have three prongs at one end, but when viewed from a different angle, appears to have only two.
#36
The Adelson's Same Color Illusion
The Adelson's Same Color Illusion is an optical illusion that tricks the eye into perceiving two colors as the same when they are actually different. The illusion was discovered by Edward Adelson, a professor of vision science at MIT, in 1995. In the illusion, two squares of different colors
#37
The Benham's Disk
The Benham's Disk Illusion is an optical illusion created by British scientist Arthur Benham in the late 19th century. It consists of a black and white disk with alternating black and white arcs. When the disk is rotated, the arcs appear to move in opposite directions, creating a mesmer
#38
The Chubb Illusion
The Chubb Illusion is an optical illusion created by British psychologist Richard Chubb in the early 2000s. It involves a series of black and white circles that appear to move when viewed from different angles. The illusion is created by the way the circles are arranged and the way they interact with the
#39
The Delboeuf Illusion
The Delboeuf Illusion is an optical illusion that demonstrates how our perception of size can be altered by the context in which it is presented. It is based on the idea that when two circles of equal size are placed near each other, the one that is surrounded by a larger circle
#40
The Fading Dot Illusion
This optical illusion is a fascinating phenomenon that has been studied by scientists for decades. It involves a single dot that appears to fade away and become invisible when viewed from a certain angle. The illusion is created by the way the light reflects off the dot, making it appear to disappear. It is
#41
The Haze Illusion
The Haze Illusion is an optical illusion that creates a sense of depth and distance by using a combination of light and shadow. It is created by using a light source that is placed at a distance from the subject, and then a haze is added to the scene. This creates a misty
#42
The Leaning Tower Illusion
This optical illusion is based on the famous Leaning Tower of Pisa. It features an image of the tower that appears to be leaning at an impossible angle. Viewers are challenged to determine if the tower is actually leaning or if it is an illusion created by the artist. This illusion is
#43
The Motion Silhouette Illusion
This optical illusion creates the illusion of motion when a static image is viewed. It is created by combining two or more silhouettes of the same object in different positions. When viewed, the silhouettes appear to move in a continuous loop, creating a mesmerizing effect. This illusion is often used
#44
The Orbison Illusion
The Orbison Illusion is an optical illusion created by artist and musician Roy Orbison. It is a mesmerizing visual experience that creates a three-dimensional effect when viewed from different angles. The illusion is composed of a series of geometric shapes that appear to move and shift as the viewer's
#45
The Pinna-Brelstaff Illusion
The Pinna-Brelstaff Illusion is an optical illusion created by Italian psychologist Gaetano Kanizsa in 1955. It is a visual illusion in which a white triangle appears to be present in the center of a black disc, even though no triangle is actually there. The illusion is
#46
The Scintillating Grid Illusion
This optical illusion features a grid of black and white squares that appear to shimmer and sparkle when viewed from a distance. The illusion is created by the interaction of light and dark squares, and the effect is enhanced when the viewer moves their eyes around the grid. The Scintillating Grid
#47
The Tilted Lines Illusion
This optical illusion features a series of vertical lines that appear to be tilted at an angle. The illusion is created by the use of alternating black and white lines that are slightly offset from each other. The illusion is enhanced by the use of shading and highlights to create a 3D effect. This
#48
The Vanishing Point Illusion
This optical illusion is a mind-boggling phenomenon that will leave you questioning your perception of reality. The Vanishing Point Illusion is an image that appears to have no end, as if the objects in the image are disappearing into infinity. The illusion is created by a combination of perspective and
#49
The White's Illusion
The White's Illusion is an optical illusion created by Edward H. White in the late 19th century. It consists of a grid of black and white squares, arranged in a checkerboard pattern. When viewed from a distance, the grid appears to be composed of alternating light and dark squares
#50
The Zoetrope Illusion
The Zoetrope Illusion is an optical illusion that creates the illusion of motion when a series of still images are viewed in rapid succession. It was invented in 1834 by William George Horner and is often referred to as a "wheel of life". This illusion works by having a
#51
The Breathing Square Illusion
This optical illusion is a mesmerizing visual experience that will leave you in awe. It features a square with a pattern of lines that appear to be moving and breathing when you look at it. The illusion is created by the combination of the pattern and the way the lines are arranged. As you
#52
The Dynamic Luminance-Gradient Effect
This effect is a powerful tool used to create a dynamic and visually appealing look in digital images. It uses a combination of light and color to create a gradient effect that can be used to add depth and texture to an image. The effect can be used to create a range of looks,
#53
The Flashed Face Distortion Effect
The Flashed Face Distortion Effect is a phenomenon in which a person's face appears to be distorted when briefly exposed to a face flashed on a screen. This effect has been studied extensively in the field of psychology, as it has implications for how people process and recognize faces. The effect has
#54
The Grid Illusion
The Grid Illusion is an optical illusion that tricks the eye into seeing a pattern of curved lines instead of straight lines. It is a fascinating phenomenon that has puzzled scientists and artists alike. The illusion is created by a grid of squares, each filled with a different color. When viewed from a
#55
The Helmholtz Square Illusion
The Helmholtz Square Illusion is an optical illusion created by German physicist Hermann von Helmholtz in the late 19th century. The illusion consists of four squares arranged in a square pattern, with two of the squares being of a different size. When viewed from a distance, the two
#56
The Kitaoka's Rotating Snakes
This optical illusion was created by Akiyoshi Kitaoka, a professor of psychology at Ritsumeikan University in Japan. It consists of a series of concentric circles with curved lines that appear to be rotating in opposite directions. The illusion is created by the way the curved lines
#57
The Lilac Chaser
The Lilac Chaser is a captivating visual illusion that has been around since the late 19th century. It involves a sequence of rapidly alternating images of a single lilac flower and a field of lilacs. When viewed for a few seconds, the single flower appears to move across the field
#58
The McCollough Effect
The McCollough Effect is a phenomenon in which a person's perception of color is altered after prolonged exposure to black and white images. It was first discovered by American psychologist Celeste McCollough in 1965 and has been studied extensively since then. The effect is thought to be caused by
#59
The Motion Induced Blindness
This is an optical illusion in which an observer perceives a stationary object to disappear and reappear when the observer moves their eyes. It is caused by a combination of motion and contrast, and is a phenomenon that has been studied since the late 19th century. The illusion is created when
#60
The Ninio's Extinction Illusion
The Ninio's Extinction Illusion is a phenomenon that occurs when a person perceives an object to have disappeared, even though it is still present. This illusion is named after the Israeli psychologist, Amos Tversky, who first described it in the 1970s. The illusion occurs when an
#61
The Ouchi Illusion
The Ouchi Illusion is an optical illusion that was discovered by Japanese psychologist Eiji Ouchi in the 1930s. It is a visual phenomenon in which a single line appears to be two separate lines when viewed from different angles. The illusion is created by the interaction of two different lines that are
#62
The Peripheral Drift Illusion
The Peripheral Drift Illusion is an optical illusion that occurs when a person looks at a pattern of moving dots and perceives them as moving in a single direction, even though the dots are actually moving in multiple directions. This illusion is created by the brain's tendency to group similar objects together
#63
The Rotating Rings
This description explores the fascinating phenomenon of the rotating rings of Saturn. Discovered by Galileo Galilei in 1610, the rings of Saturn are composed of billions of pieces of ice and dust particles, ranging in size from micrometers to meters. As Saturn rotates, the rings
#64
The Stepping Feet Illusion
This optical illusion is a classic example of how our perception of reality can be distorted. It consists of a grid of alternating black and white squares, arranged in a way that creates the illusion of a set of feet walking across the grid. The illusion is created by the alternating light and dark squares
#65
The Troxler's Fading
The Troxler's Fading Effect is a phenomenon in which a stationary visual stimulus gradually disappears from an observer's vision, even when the observer is fixated on the stimulus. This effect was first described by Swiss philosopher and physician Ignaz Paul Vital Troxler in 1804.
#66
The Wagon Wheel Effect
The Wagon Wheel Effect is a phenomenon in which a spinning wheel appears to move backward or forward when viewed from a certain angle. It is caused by the persistence of vision, which is the phenomenon in which the eye retains a visual image for a fraction of a second after the source has
#67
The Zollner Illusion
The Zollner Illusion is an optical illusion that was first discovered by German psychologist Gustav Theodor Fechner in the 1860s. It is a classic example of an ambiguous figure, in which the same image can be interpreted in two different ways. The illusion consists of a series of alternating
#68
The Anomalous Motion Illusion
This optical illusion is a phenomenon that occurs when a person perceives motion in a static image. The illusion is created by a pattern of alternating light and dark shapes, which appear to move when the image is viewed. The Anomalous Motion Illusion is an intriguing visual effect that has been studied
#69
The Bulging Squares
This puzzle game challenges players to fill in the empty squares of a grid with the right shapes. Players must use their spatial reasoning skills to figure out which shapes will fit in the bulging squares. The game features multiple levels of difficulty, and each level requires players to use different strategies to
#70
The Enigma Illusion
The Enigma Illusion is an exciting and mysterious magic trick that will leave your audience mesmerized. With a few simple props and a few clever sleight-of-hand moves, you can create an illusion that will leave your audience wondering how you did it. This trick is perfect for any
#71
The Floating Star Illusion
The Floating Star Illusion is a mesmerizing optical illusion that creates the illusion of a star floating in mid-air. It is created by using a combination of light, mirrors, and carefully placed objects to create a 3D effect. Viewers will be captivated by the illusion of a star
#72
The Ghostly Gaze Illusion
This optical illusion is a spooky and mysterious visual experience that will leave you mesmerized. When you look at the image, you will see a ghostly figure staring back at you with a piercing gaze. This illusion is created by a series of lines and shapes that form a face-like
#73
The Hering Illusion
The Hering Illusion is an optical illusion in which two straight and parallel lines appear to be bowed outwards. It was first described by the German physiologist Ewald Hering in 1861 and is still used today to study visual perception. The illusion is created by the use of two sets
#74
The Impossible Colors
This book explores the vibrant and mysterious colors of life that often seem impossible to capture. Through vivid descriptions and beautiful illustrations, readers will be taken on a journey of discovery to uncover the hidden hues of life that are often overlooked. From the vibrant blues of the ocean to the subtle
#75
The Jastrow Illusion
The Jastrow Illusion is an optical illusion that was discovered by American psychologist Joseph Jastrow in the late 19th century. It is an illusion of perception in which two identical figures appear to be different sizes when placed side-by-side. This illusion is often used to demonstrate the
#76
The Koffka Ring
The Koffka Ring is an enchanting adventure through time and space. Follow the mysterious Koffka Ring as it leads you on a journey of discovery, unlocking the secrets of the past and unlocking the power of the future. Along the way, you'll
#77
The Lilac Chaser
The Lilac Chaser is a captivating visual illusion that has been around since the late 19th century. It involves a sequence of rapidly alternating images of a single lilac flower and a field of lilacs. When viewed for a few seconds, the single flower appears to move across the field
#78
The Motion Aftereffect
This paper will explore the phenomenon of visual perception known as the motion aftereffect. This phenomenon occurs when an observer views a moving object and then looks away, perceiving the stationary world as moving in the opposite direction. We will examine the
#79
The Necker Cube
The Necker Cube is a classic visual puzzle that has been around since the 19th century. It consists of a two-dimensional line drawing of a cube, which can be interpreted in two ways. The challenge is to switch between the two interpretations, and to try to
#80
The Oppel-Kundt Illusion
The Oppel-Kundt Illusion is an optical illusion that was first described by German physicist Gustav Theodor Fechner in 1876. It is an illusion of motion created by two parallel lines of alternating black and white stripes. When the stripes are viewed from a distance, they appear
#81
The Poggendorff Illusion
The Poggendorff Illusion is an optical illusion that occurs when two straight and parallel lines are interrupted by a third line. When viewed, the two lines appear to be misaligned and curved, even though they are actually straight and parallel. This illusion was first described by Johann Karl Friedrich Z
#82
The Rotating Snake Illusion
This optical illusion is a mesmerizing visual trick that plays with our perception of motion. It consists of a series of black and white stripes arranged in a circular pattern, creating the illusion of a snake rotating around its own axis. When viewed from a distance, the stripes appear to move and create
#83
The Simultaneous Contrast Illusion
The Simultaneous Contrast Illusion is an optical illusion that occurs when two different colors are placed side by side. The colors appear to interact with each other, creating a contrast that is greater than what would be expected. This illusion is caused by the brain's perception of the colors, as it
#84
The Ternus Illusion
The Ternus Illusion is an optical illusion that was discovered in the early 20th century by German psychologist Max Wertheimer. It is based on the idea that when two or more objects are presented in rapid succession, they appear to move together as a single object. The illusion is named
#85
The Vanishing Dot Illusion
This optical illusion is an amazing trick of the eye. When you look at a white background with a single black dot in the center, the dot will appear to slowly fade away and eventually disappear. This illusion is a great way to show how our vision can be tricked by our own perception.
#86
The Watercolor Illusion
This unique art form combines the beauty of watercolor painting with the power of optical illusion. Using a combination of vibrant colors and intricate patterns, the Watercolor Illusion creates a mesmerizing effect that will captivate viewers. With its ability to create a sense of depth and movement, this art
#87
The Zoellner Illusion
The Zoellner Illusion is an optical illusion that involves two circles of the same size and color, but one appears to be larger than the other. This illusion was discovered by German physicist Adolph Zoellner in the late 19th century and is still studied today. The illusion is created
#88
The Ambiguous Cylinder Illusion
This optical illusion is a two-dimensional representation of a three-dimensional object. It appears to be a cylinder, but it is difficult to determine its orientation. When viewed from different angles, the cylinder appears to change shape and orientation. This illusion has been used to study how the human brain
#89
The Benham's Disk
The Benham's Disk Illusion is an optical illusion created by British scientist Arthur Benham in the late 19th century. It consists of a black and white disk with alternating black and white arcs. When the disk is rotated, the arcs appear to move in opposite directions, creating a mesmer
#90
The Chromostereopsis
The Chromostereopsis Illusion is an optical illusion that occurs when two images of the same object are viewed with different colors. It is caused by the difference in the way the eyes perceive the two colors, resulting in an illusion of depth or three-dimensionality. The illusion is most
#91
The Dynamic Ebbinghaus
The Dynamic Ebbinghaus Effect is a psychological phenomenon that examines how our memories are affected by the passage of time. It looks at how our memories are impacted by the amount of time that has passed since we first encountered the information, as well as the number of times we have recalled
#92
The Fraser Spiral Illusion
The Fraser Spiral Illusion is an optical illusion created by British psychologist Sir David Fraser in 1908. It is a two-dimensional pattern of concentric circles that appear to be a three-dimensional spiral. When viewed from a certain angle, the circles appear to be connected and form a continuous spiral.
#93
The Hollow-Face Illusion
The Hollow-Face Illusion is an optical illusion that appears to show a hollow face when viewed from certain angles. It is created by a flat, two-dimensional image that appears to be a three-dimensional face when viewed from certain angles. The illusion is created by the way the light reflects
#94
The Impossible Trident
The Impossible Trident is an ancient artifact of immense power. It is said to have been forged by the gods themselves and is capable of granting its wielder tremendous strength and control over the sea. Legends say that it can be used to control the tides, summon storms, and even raise sunken
#95
The Kanizsa Triangle
The Kanizsa Triangle is an optical illusion that was first described by Italian psychologist Gaetano Kanizsa in 1955. It consists of three Pac-Man shapes arranged in a triangle with a white space in the middle. When viewed, the triangle appears to be a solid shape with a
#96
The Lilac Chaser
The Lilac Chaser is a captivating visual illusion that has been around since the late 19th century. It involves a sequence of rapidly alternating images of a single lilac flower and a field of lilacs. When viewed for a few seconds, the single flower appears to move across the field
#97
The Motion Aftereffect
This paper will explore the phenomenon of visual perception known as the motion aftereffect. This phenomenon occurs when an observer views a moving object and then looks away, perceiving the stationary world as moving in the opposite direction. We will examine the
#98
The Necker Cube
The Necker Cube is a classic visual puzzle that has been around since the 19th century. It consists of a two-dimensional line drawing of a cube, which can be interpreted in two ways. The challenge is to switch between the two interpretations, and to try to
#99
The Oppel-Kundt Illusion
The Oppel-Kundt Illusion is an optical illusion that was first described by German physicist Gustav Theodor Fechner in 1876. It is an illusion of motion created by two parallel lines of alternating black and white stripes. When the stripes are viewed from a distance, they appear
#100
The Poggendorff Illusion.
The Poggendorff Illusion is an optical illusion first described by Johann Karl Friedrich Zöllner in 1860. It is an illusion of misalignment, in which two parallel lines appear to be misaligned when intersected by a third line. The illusion is named after Johann Christian P