Geometric Illusions Archives

Crescent Moon Bridge Illusion

This first Crescent Moon Bridge illusion is created by the Crescent Moon Bridge located in Guangzhou, China. This bridge is also known as the “Liu Rong Bridge” and is located in Yuexiu Park, which is a popular tourist destination in Guangzhou.

The second Crescent Moon Bridge illusion is also known as “Yueyaqiao” in Chinese and is located in the city of Beijing, China.

If you are interested in learning more about the Crescent Moon Bridge illusion, scroll down to learn more about it.

What is the Crescent Moon Bridge Illusion?
How does the Crescent Moon Bridge Illusion work?
Some Similar Illusions
Discovery of the Crescent Moon Bridge Illusion
References and Resources

What is the Crescent Moon Bridge Illusion?

The Crescent Moon Bridge creates the illusion of a crescent moon because of its unique shape and reflection in the water. The bridge has a high arch in the center and slopes downward on both sides, which creates a crescent moon shape when viewed from a distance.

When the bridge is reflected in the water, it creates a perfect circle that complements the crescent shape of the bridge. This reflection adds to the illusion and creates a stunning visual effect, especially when viewed during the night when the bridge is illuminated.

The design of the Crescent Moon Bridge was also influenced by Chinese garden design principles, which often incorporate elements of nature and symbolism. The crescent moon shape is a symbol of good luck and prosperity in Chinese culture, which may have influenced the choice of the bridge’s design.

How does the Crescent Moon Bridge Illusion Work?

Some Similar Illusions

There are several other famous architectural and natural landmarks that create illusionary effects like the Crescent Moon Bridge Illusion. Here are a few examples:

The Leaning Tower of Pisa: This iconic tower in Italy is famous for its lean, which creates an optical illusion. The tower was built on soft ground, which caused it to lean over time.
The Ames Room: This is a type of room designed to create an optical illusion that makes people appear smaller or larger than they actually are. It is often used in movies to create special effects.
The Salt Flats in Bolivia: These salt flats create an illusion of infinity because of their flat surface and lack of visual cues. When photographed from certain angles, the salt flats appear to go on forever.
The Penrose Stairs: This is a type of impossible staircase that appears to be going up or down, but in reality, leads back to the same starting point. It is named after the mathematician Roger Penrose, who first described the illusion.
The Necker Cube: This is a simple line drawing of a cube that can be perceived in two different orientations. When viewed one way, the cube appears to be facing upward, and when viewed the other way, it appears to be facing downward. This effect is called “multistable perception.”

Discovery of the Crescent Moon Bridge Illusion

The first image: The Moon Bridge in Guangzhou, also known as the Liu Rong Bridge, was built during the Qing Dynasty (1644-1912), but the specific builders are not known. The bridge was constructed as part of a larger garden project in Yuexiu Park, which was then the site of the imperial governor’s residence in Guangzhou.

The Moon Bridge is made of stone and has a unique shape that resembles a crescent moon when viewed from certain angles. It spans over a small lake and is a popular spot for visitors to take photos and enjoy the scenery. The bridge is considered one of the iconic landmarks of Guangzhou and an important cultural relic of the city’s history.

The second Image: The original Crescent Moon Bridge was built during the Ming Dynasty (1368-1644), but the specific builders are not known. The bridge was reconstructed during the Qing Dynasty (1644-1912) by Emperor Qianlong, who was known for his passion for art and architecture. The reconstruction of the bridge was part of a larger renovation of the Summer Palace, which was carried out by Emperor Qianlong in the 18th century.

During the reconstruction, the bridge was expanded and renovated with white marble, which gave it its distinctive appearance. The bridge was built to connect the eastern shore of Kunming Lake with an island in the middle of the lake, which was used as a private retreat by the emperor and his family. Today, the bridge is considered one of the most beautiful and iconic structures in the Summer Palace, and a symbol of Chinese garden design and architecture.

References and Resources

In addition to the Crescent Moon Bridge Illusions, check out our complete list of illusions.

Illusion Gate at Theresianum

This is the Illusion Gate at Theresianum.

The Illusion Gate is an optical illusion created by the careful placement of columns, pilasters, and arches. From a certain viewpoint, the gate appears to be a normal gate with a central doorway. However, as you approach the gate, the columns and arches become visible, and the doorway appears to recede further into the courtyard.

If you are interested in learning more about the Illusion Gate at Theresianum, scroll down to read more about it.

What is the Illusion Gate at Theresianum?
How does the Illusion Gate at Theresianum work?
Some Similar Illusions
Discovery of the Illusion Gate at Theresianum
References and Resources

What is the Illusion Gate at Theresianum?

The Illusion Gate at Theresianum in Vienna is a unique architectural feature located in the courtyard of Theresianum, a former imperial academy founded by Empress Maria Theresa in the 18th century. The Illusion Gate was designed by the Austrian architect Johann Fischer von Erlach and was completed in 1753.

The Illusion Gate is an optical illusion created by the careful placement of columns, pilasters, and arches. From a certain viewpoint, the gate appears to be a solid gate with a central doorway. However, as you approach the gate, the columns and arches become visible, and the doorway appears to recede further into the courtyard.

This optical illusion is known as forced perspective, and it was a popular technique used by Baroque architects to create the illusion of depth and grandeur in their designs. The Illusion Gate at Theresianum is considered one of the finest examples of this technique, and it continues to fascinate and amaze visitors to this day.

How does the Illusion Gate at Theresianum Work?

The Illusion Gate at Theresianum in Vienna is an example of a technique called forced perspective, which is an optical illusion that makes objects appear to be larger or smaller, closer or farther away than they actually are.

The Illusion Gate is designed in a way that when viewed from a specific angle, the columns and arches lining the passageway align perfectly with the architecture behind it, creating the illusion of a solid wall. The key to this effect is the careful placement and proportioning of the columns, pilasters, and arches, which create the visual effect of depth and receding space.

When viewed from up close, the observer’s perspective shifts, revealing the true nature of the passageway and creating the impression that the doorway is farther away than it actually is. This illusion is created by the fact that the size and distance of the architectural elements change as the observer moves closer or farther away from the gate.

In summary, the Illusion Gate at Theresianum in Vienna works by manipulating the viewer’s perception of depth and distance through the careful placement and proportioning of architectural elements. The result is a stunning example of forced perspective that continues to fascinate and delight visitors to this day.

Some Similar Illusions

Forced perspective illusions, like the Illusion Gate at Theresianum in Vienna, are not uncommon in architecture, art, and photography. Here are a few examples of similar illusions:

Ames Room Illusion: This is a distorted room that appears to be an ordinary square or rectangular room when viewed through a peephole, but it is actually a trapezoidal shape. The illusion is created by using forced perspective to make one wall appear closer than the other, and by distorting the floor and ceiling.
Anamorphic Illusions: These are distorted images that appear as recognizable objects when viewed from a certain angle or with a special viewing device, such as a mirror or cylindrical mirror. Anamorphic illusions use distorted perspective to create an image that looks distorted when viewed from a normal perspective, but appears normal when viewed from the correct angle or with the correct device.
Trompe-l’oeil: This is a type of painting or sculpture that creates the illusion of three-dimensional space, depth, and realism. It often involves painting or sculpting objects in a way that makes them appear to be real, such as painting a window or door on a flat surface.
Mirror Illusions: These are illusions created by using mirrors to reflect images in unexpected ways. For example, a mirror can be used to create the illusion of a room that is much larger or smaller than it actually is.

Forced perspective illusions are a fascinating way to manipulate the viewer’s perception of space and distance, and they continue to captivate people’s imaginations to this day.

Discovery – Creation of the Illusion Gate at Theresianum

The Illusion Gate at Theresianum in Vienna was designed by the Austrian architect Johann Fischer von Erlach, who was one of the leading architects of the Baroque period. Johann Fischer von Erlach was born in Graz, Austria in 1656, and he studied architecture and engineering in Rome, where he was influenced by the work of Bernini and Borromini.

Johann Fischer von Erlach was known for his grand and monumental architectural designs, which often employed the use of illusion and forced perspective to create dramatic and awe-inspiring effects. He designed several buildings and monuments in Vienna, including the Karlskirche, the Church of St. Peter and Paul, and the Palace of Prince Eugene of Savoy.

The Illusion Gate at Theresianum was completed in 1753, several years after Johann Fischer von Erlach’s death in 1723. However, the design and plans for the gate were created by Fischer von Erlach before his death, and the gate was constructed according to his specifications and vision. The Illusion Gate remains one of Johann Fischer von Erlach’s most famous and innovative architectural works, and it continues to inspire and amaze visitors to this day.

Theresianum is a large complex of buildings located in the Landstraße district of Vienna, Austria. It was originally built in the 18th century as a boarding school for boys and girls by Empress Maria Theresa of Austria, who is considered one of the greatest rulers of the Habsburg dynasty.

The complex consists of several buildings, including a grand palace, a chapel, and a large courtyard. Theresianum was designed in the Baroque style by several architects, including Johann Bernhard Fischer von Erlach, who also designed many other famous buildings in Vienna, such as the Karlskirche.

Theresianum served as a prestigious educational institution for many years, and many of its graduates went on to become important figures in Austrian politics, culture, and society. Today, Theresianum is still a highly regarded school, offering education from kindergarten to university level.

In addition to its educational significance, Theresianum is also an important cultural landmark in Vienna, attracting many visitors each year who come to admire its stunning architecture and learn more about the history of the Habsburg dynasty and the Austrian Empire.

References and Resources

In addition to the Illusion Gate at Theresianum, check out our complete list of illusions along with the Orthographic Projection Illusion and the Parallel Lines Illusion

Orthographic Projection Illusion

Check out this cool Orthographic Projection Illusion!

The shape in the Orthographic Projection Illusion is curved, but the shadow it casts is perfectly square.

If you are interested in learning more about how it works, scroll down to read more about it.

What is a Orthographic Projection Illusion?
How does the Orthographic Projection Illusion work?
Some Similar Illusions
Discovery of the Orthographic Projection Illusion
References and Resources

What is the Orthographic Projection Illusion?

When a curved object creates a straight shadow, it is called “orthographic projection” or “parallel projection.” When it creates an illusory effect, it is called an Orthographic Projection Illusion.

This is in contrast to a perspective projection, where the lines from the object to the light source converge at a vanishing point, resulting in a shadow with curved sides.

Orthographic projection is commonly used in technical drawing and engineering to show an object’s shape and dimensions accurately.

How does the Orthographic Projection Illusion Work?

The Orthographic Projection Illusion is a type of projection where all the lines from the object to the light source are parallel, resulting in a shadow that is the same shape as the object but with straight sides.

The straight shadow created by a curved object in an orthographic projection could be considered an illusion, since it is not an accurate representation of the object n reality.

In reality, a curved object would generally create a shadow with curved sides, but in an orthographic projection, the shadow is represented with straight sides due to the way the projection is created.

Orthographic projections are a useful tool in technical drawing and design because they provide a simplified, accurate representation of an object’s shape and dimensions from a specific viewpoint, even if the resulting shadow may not be realistic.

Some Similar Illusions

Orthographic projection is a type of geometric or mechanical illusion, which creates a representation of a three-dimensional object on a two-dimensional surface, such as a sheet of paper or a computer screen. There are several other types of illusions that share some similarities with orthographic Projection Illusion

Isometric projection: This is a type of projection that creates a three-dimensional representation of an object by showing all three axes (x, y, and z) at the same time. Isometric projection is often used in technical drawing to create a more realistic representation of an object than orthographic projection.
Oblique projection: This is a type of projection that creates a three-dimensional representation of an object by showing one face of the object in its true shape and size, while the other faces are shown at an angle. Oblique projection is often used in architectural and furniture design to create a more realistic sense of depth and perspective.
Anamorphic illusion: This is a type of illusion that creates a distorted image that appears to be three-dimensional when viewed from a specific angle or perspective. Anamorphic illusions are often used in street art or advertising to create eye-catching images that appear to jump off the page.
Trompe l’oeil illusion: This is a type of illusion that creates a realistic image that appears to be three-dimensional, but is actually a flat, two-dimensional painting or drawing. Trompe l’oeil illusions are often used in art and interior design to create the illusion of depth and realism.

Overall, each of these illusions creates a sense of depth and perspective on a two-dimensional surface, much like orthographic projection, but each achieves this effect in a slightly different way.

Discovery of the Orthographic Projection Illusion

Orthographic projection like what is seen in this Orthographic Projection Illusion has been used for many centuries by artists, architects, and engineers, and it is difficult to credit any one person with its discovery or study. However, the use of orthographic projection as a standardized method of technical drawing can be traced back to the Renaissance era, when artists such as Leonardo da Vinci and Albrecht Dürer developed methods for representing objects with accurate proportions and perspectives.

In the centuries that followed, orthographic projection became an essential tool for architects, engineers, and designers in a wide range of fields, including mechanical engineering, architecture, and product design. In the 20th century, the development of computer-aided design (CAD) software made orthographic projection even more widely used and accessible.

Orthographic projection remains an important technique in technical drawing and design, and it is taught in many schools and universities as a fundamental skill for engineers and designers. While many individuals have contributed to the development and popularization of orthographic projection over the centuries, it is primarily considered a collective achievement of the fields of art, architecture, and engineering.

References and Resources

In addition to the Orthographic Projection Illusion, check out our complete list of illusions.

Parallel Lines Illusion

In this Parallel Lines Illusion by Akiyoshi Kitaoka, the lines are perfectly straight, but appear to be bent.

If you are interested in learning how the Parallel Lines Illusion works, scroll down to read more about it.

What is the Parallel Lines Illusion?
How does the Parallel Lines Illusion work?
Some Similar Illusions
Discovery of the Parallel Lines Illusion
References and Resources

What is the Parallel Lines Illusion?

The “Parallel Lines Illusion,” and it was created by Akiyoshi Kitaoka. In this illusion, straight lines that are parallel to each other appear to be bent or curved due to the presence of other angled lines in the image.

The effect is created by the way the brain processes visual information and can be quite compelling, making it appear as if the straight lines are bending and distorting in strange ways.

Like the Zöllner Illusion, the Parallel Lines Illusion is a great example of how our brains can be easily fooled by visual stimuli.

How does the Parallel Lines Illusion Work?

The Parallel Lines Illusion works because of the way our brain processes visual information. When we look at an image with parallel lines, our brain expects the lines to be straight and parallel, but the presence of other angled lines in the image can disrupt this expectation.

When angled lines are superimposed over the parallel lines, they create an optical effect called “perspective foreshortening,” which makes the parallel lines appear to be bending or curving.

This happens because the angled lines create an illusion of depth, which makes our brain interpret the parallel lines as if they are located in three-dimensional space, and therefore appear to be bending or curving.

In the case of the Parallel Lines Illusion, the effect is enhanced by the use of colors and shading, which further contribute to the illusion of depth and curvature.

The illusion is a great example of how our brain can be easily fooled by visual stimuli, and how our perception of reality can be shaped by subtle visual cues.

Some Similar Illusions

There are many optical illusions that are similar to the Parallel Lines Illusion, in that they also play with our perception of depth, perspective, and spatial relationships. Here are a few examples:

The Zöllner Illusion: This illusion is similar to the Parallel Lines Illusion in that it creates the impression of lines that are not parallel. In this illusion, however, the lines are diagonal rather than straight, and they are crossed by other lines that make them appear to be bent or distorted.
The Poggendorff Illusion: This illusion involves two parallel lines that are interrupted by a diagonal line. Depending on the orientation of the diagonal line, the parallel lines appear to be misaligned or disconnected.
The Müller-Lyer Illusion: This illusion creates the impression that two lines of equal length are actually different lengths. The illusion is created by adding arrowheads or other cues to the ends of the lines, which cause our brain to interpret them as being longer or shorter than they actually are.
The Ponzo Illusion: This illusion involves two parallel lines that are placed over a background of converging lines. The parallel lines appear to be different lengths, with the upper line appearing longer than the lower line, even though they are actually the same length.
The Ames Room Illusion: This illusion involves a specially designed room that appears to be rectangular, but is actually shaped like a trapezoid. When viewed from a certain angle, people in the room appear to be different sizes, with some appearing much larger or smaller than others.

These illusions, like the Parallel Lines Illusion, are all based on the way our brains process visual information, and they can be used to demonstrate how our perception of reality can be manipulated by subtle visual cues.

Discovery of the Parallel Lines Illusion

The the Parallel Lines Illusion was created by Akiyoshi Kitaoka, a Japanese psychologist and visual perception researcher, as well as an artist who is known for his creation of a variety of visual illusions. He is a professor at Ritsumeikan University in Kyoto, Japan, where he conducts research into the mechanisms of visual perception, including how our brains process visual information and how this processing can be influenced by context, color, and other factors.

Kitaoka is particularly well-known for his creation of colorful and striking visual illusions, many of which are based on the principles of optical art and Op Art. His illusions are popular not only in scientific and academic circles, but also in popular culture and on social media, where they have gained a large following. Some of Kitaoka’s most famous illusions include the “Rotating Snakes Illusion,” the “Parallel Lines Illusion,” and the “Chromatic Illusion.” Kitaoka’s work has contributed to our understanding of the complex processes that underlie visual perception, as well as to our appreciation of the ways in which art and science can intersect and inform each other.

References and Resources

In addition to the Parallel Lines Illusion, check out our complete list of illusions.

Kelvin-Helmholtz Cloud Illusion

These amazing images are of Kelvin-Helmholtz Cloud which create an amazing illusion effect.

Kelvin-Helmholtz Clouds can create an optical illusion because of their distinctive appearance. The rolling, wave-like patterns of these clouds can give the impression that they are moving, even though they are actually stationary.

If you are interested in learning more about Kelvin-Helmholtz Cloud illusions, scroll down to read more about them.

What are Kelvin-Helmholtz Clouds ?
How does the Kelvin-Helmholtz Clouds Illusion work?
Some Similar Illusions
Discovery of Kelvin-Helmholtz Clouds
References and Resources

What are Kelvin-Helmholtz Cloud and What is the Kelvin-Helmholtz Cloud Illusion?

Kelvin-Helmholtz clouds are a type of cloud formation that occurs when there is a shear between two layers of air moving at different speeds or in different directions. They are named after Lord Kelvin and Hermann von Helmholtz, who independently studied the physics of the atmospheric instability that causes this phenomenon.

The clouds appear as a series of rolling, wave-like patterns that resemble ocean waves. They often form in the boundary layer between two air masses with differing densities, such as a layer of warm air over a layer of cool air. As the two layers of air move past each other, the shear creates instability in the boundary layer, which can cause the formation of the distinctive Kelvin-Helmholtz cloud pattern.

These clouds are relatively rare and are often considered a sign of turbulence in the atmosphere. They can occur at any altitude, from near the ground to high in the atmosphere, and can be seen in a variety of weather conditions, including clear skies and thunderstorms.

Kelvin-Helmholtz clouds can create an optical illusion because of their distinctive appearance. The rolling, wave-like patterns of these clouds can give the impression that they are moving, even though they are actually stationary.

This illusion is caused by the contrast between the stationary cloud and the moving air that surrounds it. The patterns in the cloud create a sense of motion that is amplified by the contrast with the relatively static background of the sky.

In addition to their optical illusions, Kelvin-Helmholtz clouds can also create a sense of disorientation or vertigo in pilots who encounter them in flight. This is because the rolling, wave-like patterns of the clouds can make it difficult to determine the aircraft’s true orientation or attitude, which can be disorienting for pilots.

Despite these potential illusions and disorienting effects, Kelvin-Helmholtz clouds are a real meteorological phenomenon that occurs when there is a shear between two layers of air moving at different speeds or in different directions.

How does the Kelvin-Helmholtz Cloud Work?

Kelvin-Helmholtz clouds and the Kelvin-Helmholtz Cloud illusion are formed by a process called Kelvin-Helmholtz instability, which occurs when there is a difference in velocity between two adjacent layers of fluid, such as air. The difference in velocity creates a shearing force at the interface between the two layers, which can cause the formation of vortices, or eddies, in the fluid.

In the case of atmospheric Kelvin-Helmholtz clouds, the two layers of air are usually separated by a boundary layer, which can form between two different air masses with different densities or temperatures. For example, a layer of warm air moving over a layer of cooler air can create the conditions for Kelvin-Helmholtz clouds to form.

As the shear between the two layers of air increases, the fluid instability can cause the formation of wave-like patterns or rolls, which can become amplified as the vortices grow in size. Eventually, the instability can cause the formation of distinct, cloud-like structures that resemble breaking waves or ocean surf.

The exact process of cloud formation can vary depending on the specific atmospheric conditions and the size and shape of the vortices. However, in general, Kelvin-Helmholtz clouds are formed by the same basic physical process of fluid instability and the formation of eddies or waves in the interface between two adjacent layers of fluid.

Some Similar Illusions and Phenomena

There are several natural phenomena that can create similar illusions to Kelvin-Helmholtz Clouds and the Kelvin-Helmholtz Cloud Illusion:

Mammatus clouds: These are pouch-like cloud formations that appear as bulges or sacks that hang underneath the base of a larger cloud. They are often associated with thunderstorms and can give the appearance of a series of upside-down bubbles.
Crepuscular rays: Also known as “God rays,” these are shafts of sunlight that appear to radiate out from the sun and create the appearance of pillars of light or rays of divine light.
Fata Morgana: This is a type of mirage that appears as a series of distorted, vertical columns of light that appear to be floating in the air. Fata Morgana is caused by the bending of light rays as they pass through layers of air with different temperatures and densities.
Asperitas Clouds: These are clouds that have a wavy, undulating appearance, similar to Kelvin-Helmholtz clouds. However, unlike Kelvin-Helmholtz clouds, which are caused by shear between two layers of air, undulatus asperatus clouds are formed by chaotic, turbulent air currents.

All of these natural phenomena can create stunning and surreal illusions that inspire awe and wonder in those who witness them.

Discovery of the Kelvin-Helmholtz Cloud Illusion

Kelvin-Helmholtz clouds are named after two scientists who independently studied the physical processes that give rise to this phenomenon: William Thomson, also known as Lord Kelvin, and Hermann von Helmholtz.

Lord Kelvin first described the basic physics of Kelvin-Helmholtz instability in 1868, in a paper titled “On the Stability of Fluid Motion.” He showed that when two layers of fluid move relative to each other, small perturbations at their interface can grow and amplify into large, rolling waves, which can eventually break up into smaller vortices.

Hermann von Helmholtz, a German physicist and physician, also studied the physics of fluid instability, and independently arrived at similar conclusions to Kelvin’s in 1871. Helmholtz described the same type of instability and showed that it could occur in fluids of different viscosities and densities, including the atmosphere.

The distinctive cloud formations associated with Kelvin-Helmholtz instability were named after these two scientists to honor their contributions to the study of fluid dynamics.

References and Resources

In addition to the Kelvin-Helmholtz Clouds Illusion, check out our complete list of illusions.

Van Gogh Lego Illusion

Check out this awesome Van Gogh Lego Illusion.

If you squint your eyes, you’ll see the lego blocks transform into the iconic Van Gogh self portrait.

The Van Gogh Tile Illusion is is type of tile illusion or sometimes called a “mosaic” illusion. These illusions are created by using smaller elements, such as squares or circles, to build a larger image. When viewed from a distance, the brain merges the smaller elements together to form a coherent image. However, as you get closer to the image, you can see the individual elements and the image becomes less clear.

This effect can be seen in various forms of art and design, such as pixel art or pointillism, where the image is built up from many small dots or pixels. Additionally, it is often used in digital imaging as a technique for creating low-resolution images that still appear clear when viewed from a distance.

Scroll down to see the Van Gogh Lego Illusion, then the original artwork by Van Gogh. If you still can’t see the image in the Illusion, scroll down a bit more to see smaller versions that make the effect more clear.

After you check out the Van Gogh Lego Illusion, scroll down some more to read about how tiled illusions work.

The original Van Gogh self portrait to compare to the Van Gogh Lego Illusion.

It will be easier to see the effect in these smaller images.

Table of Contents – Van Gogh Lego Illusion

What is a Tile Illusion?
How do Tile Illusions work?
Some Similar Illusions
Discovery of the Tile Illusion
References and Resources

What is a Tile Illusion – Van Gogh Lego Illusion

The Van Gogh Lego Illusion is a type of tiled illusion which is a type of visual illusion in which a larger image is created from smaller, repeating elements or tiles. The tiles can be of different shapes, colors, or textures, and are carefully arranged to create the impression of a larger, more complex image when viewed from a distance.

Tiled illusions work by taking advantage of the brain’s tendency to group visual information into larger patterns or wholes. This is a process called “perceptual grouping” or “figure-ground organization.” By arranging the tiles in specific ways, the artist or designer can create the impression of recognizable objects, landscapes, or other scenes.

Tiled illusions can be found in many different contexts, from art and design to architecture and urban planning. For example, tiled mosaics have been used for centuries in decorative art and architecture, and can be found in everything from ancient Roman villas to modern subway stations.

How do Tile Illusions Work?

Van Gogh Lego Illusion is a tile or mosaic illusions which work by using small, discrete elements, such as squares or circles, to build a larger image. The individual elements are carefully arranged to create the impression of a continuous, recognizable image when viewed from a distance.

When you look at a tile illusion from a distance, your brain merges the individual elements together into a single image, using a process called “grouping.” This process is based on the Gestalt principles of perception, which describe how the brain organizes visual information into coherent wholes.

One of the main principles of grouping is “similarity,” which means that the brain groups together elements that are similar in shape, color, or other visual characteristics. In a tile illusion, the elements are arranged so that they create areas of similarity that correspond to the different regions of the larger image. For example, areas of similar color or brightness might correspond to the sky in a landscape, while areas of different color or brightness might correspond to the ground or other objects.

As you get closer to a tile illusion, the individual elements become more visible, and the image becomes less coherent. This is because the brain has to work harder to group the elements together into a recognizable image. In some cases, the individual elements may even become apparent, and the image may appear as a collection of discrete shapes rather than a coherent whole.

Tile illusions are a fascinating example of how the brain processes visual information, and they demonstrate the importance of context and visual grouping in our perception of the world around us.

Some Similar Illusions – Van Gogh Lego Illusion

There are several other types of illusions that are similar to tile illusions like the Van Gogh Lego Illusion in that they rely on the brain’s ability to group visual information in specific ways. Here are a few examples:

Moiré patterns: These are patterns created by overlapping two or more grids or patterns with slightly different orientations. When the patterns are overlaid, the brain tries to reconcile the conflicting information by creating a new, often intricate pattern. Moiré patterns can be found in many different contexts, including art, textiles, and printing.
Op art: Op art (short for “optical art”) is a style of art that uses geometric shapes and patterns to create optical illusions of movement, depth, and other effects. Op art often uses repeated or layered patterns that can create a sense of visual distortion or confusion.
Kinetic art: Kinetic art is a type of art that relies on movement to create visual effects. Kinetic art often uses mechanical or electrical devices to create motion, and can create illusions of movement, depth, or perspective.
Anamorphic illusions: Anamorphic illusions are images that are distorted or stretched in a specific way so that they appear normal when viewed from a particular angle or with a specific device, such as a mirror or lens. Anamorphic illusions can create startling or dramatic effects, and are often used in art and advertising.

These illusions demonstrate the incredible complexity of visual perception and the many ways that the brain processes and interprets visual information.

Discovery of the Tile Illusion

Tile illusions like the Van Gogh Lego Illusion have been used in art and design for centuries, but it’s difficult to attribute their popularity to any one individual or group. The use of tiles and mosaics in decorative art and architecture can be traced back to ancient civilizations, such as the Greeks and Romans, who used tiles to create intricate patterns and images in their buildings.

In modern times, tile illusions have been popularized by artists and designers working in a range of media. For example, the Dutch artist M.C. Escher is famous for his intricate, mind-bending tile designs, which often feature impossible architectural structures and other visual paradoxes. Escher’s work has been widely influential in the fields of graphic design, illustration, and optical art.

Other artists and designers who have used tile illusions in their work include Bridget Riley, Victor Vasarely, and Sol LeWitt, among many others. Tile illusions have also been used extensively in digital art and design, where they can be created using computer algorithms and graphics software.

The popularity of tile illusions can be attributed to their versatility and visual impact. Tile illusions can be used to create a wide range of effects, from simple patterns and images to complex, three-dimensional structures, and they have the ability to capture the viewer’s attention and imagination in a way that few other visual techniques can.

References and Resources

In addition to the Van Gogh Lego Illusion, check out the similar Van Gogh Tile Illusion our complete list of illusions.

Sorvagsvatn Lake Illusion

The Sorvagsvatn Lake Illusion also known as “Lake over the Ocean,” is an optical illusion that makes it appear as though a lake is floating high above the ocean. In reality, the lake, called Lake Sørvágsvatn, is situated on the island of Vágar in the Faroe Islands, and it is just a few meters above sea level.

Another factor that contributes to the illusion is the difference in color between the lake and the ocean. The lake is a darker color than the ocean, which creates a contrast that makes the lake appear to be floating.

The Sorvagsvatn lake illusion is created by a combination of perspective and contrast, which make it appear as though a lake is floating high above the ocean.

If you are interested, scroll down to learn more about it.

What is the Sorvagsvatn lake illusion?
How does the Sorvagsvatn lake illusion?
Some Similar Illusions
References and Resources

What is the Sorvagsvatn lake?

Sorvagsvatn is a lake located on the island of Vagar in the Faroe Islands, which is an archipelago in the North Atlantic Ocean.

The lake is situated on a cliff that is about 30 meters above sea level and surrounded by rugged terrain and steep cliffs. The lake has a unique shape, with two distinct sections connected by a narrow channel.

The western section is larger and deeper than the eastern section, which is shallower and more elongated. The lake is fed by several small streams that flow into it from the surrounding hills, and it has no visible outlet. Instead, it drains into the ocean through underground channels.

The lake is situated near the airport on the island of Vagar and is part of the Vágar Island Tourist Information Centre’s hiking trail network. Visitors can hike to the edge of the cliff overlooking the lake to take in the stunning view, which includes rolling hills, grassy meadows, and the ocean in the distance.

Sorvagsvatn is a natural wonder and one of the must-visit destinations in the Faroe Islands, with its unique geography and stunning optical illusion that makes it appear as if the lake is floating above the sea.

How does the Sorvagsvatn lake illusion work?

The Sorvagsvatn lake illusion is created by a combination of perspective and contrast, which make it appear as though a lake is floating high above the ocean.

Some Similar Illusions

There are several other illusions that involve perspective and visual cues that make objects appear larger or smaller, closer or farther away, or even floating or levitating. Here are a few examples:

Forced perspective illusion: This illusion uses the principles of perspective to create an optical illusion that makes objects appear larger or smaller than they really are. For example, a person standing closer to the camera can appear much larger than a person standing farther away, even if they are actually the same size.
Ames room illusion: In this illusion, a trapezoidal room is built with a false back wall, which makes one corner of the room appear much farther away than the other. This creates the illusion that two people of the same size can be drastically different in height, depending on where they are standing in the room.
Floating cube illusion: This illusion uses a combination of perspective and shading to make a flat image of a cube appear three-dimensional and floating above a surface.
Penrose stairs illusion: Also known as the “impossible staircase,” this illusion uses the principles of perspective and geometry to create a staircase that appears to loop back on itself, creating an impossible structure.

These are just a few examples of the many optical illusions that use perspective, contrast, and other visual cues to trick our brains into perceiving things in unexpected ways.

References and Resources

In addition to the Sorvagsvatn lake illusion, check out these Sorvagsvatn Fun Facts and Check out our complete list of illusions.

Floating Boat Illusion

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.

This illusion is caused by the refraction of light, which makes objects appear to be in a different position than they actually are. The refraction occurs because light travels at different speeds through different media, such as air and water, and changes direction as it passes through the water’s surface.

As a result, the image of the boat appears to be displaced and elevated above its actual position.. If you are interested in learning more about the illusion, scroll down to read more about it.

What is the Floating Boat Illusion?
How does the Floating Boat Illusion work?
Some Similar Illusions
Discovery of the Floating Boat Illusion
References and Resources

What is the Floating Boat Illusion?

The floating boat illusion, also known as the ghost boat illusion, is a phenomenon that occurs when a boat appears to be floating above the surface of the water, even though it is actually sitting in the water.

This illusion occurs when the water is exceptionally clear and calm, allowing light to pass through the surface of the water without much refraction.

As a result, the image of the boat appears to be displaced and elevated above its actual position, creating the illusion that the boat is floating in mid-air.

This effect can be quite convincing and can be difficult to distinguish from actual levitation without closer inspection.

How does the Floating Boat Illusion Work?

The floating boat illusion, also known as the ghost boat illusion, occurs due to the phenomenon of refraction. Refraction is the bending of light when it passes through a medium of different density, such as from air to water.

When light passes through the surface of water at an angle, it slows down and changes direction, which can cause the image of an object to appear displaced from its actual position. This is because the light rays from the object are refracted as they enter the water and again as they leave the water and enter the air, causing the image to be distorted.

In the case of the floating boat illusion, the water is so clear and still that the refraction of light is minimal, making the boat’s image appear to be floating above the water’s surface. This effect is enhanced by the fact that our brains are used to seeing boats sitting on the water’s surface, so the elevated appearance of the boat in the water creates a perceptual illusion that the boat is floating above the water. The illusion can be so convincing that it can be difficult to tell whether the boat is actually floating or not without further inspection.

Some Similar Illusions

There are many different types of optical illusions, including several that are similar to the floating boat illusion. Here are a few examples:

Mirages: Mirages occur when light is refracted by hot air near the ground, creating the appearance of water or objects in the distance. This illusion is often seen in deserts, where the air near the ground can be much hotter than the air above.
Fata Morgana: Fata Morgana is a type of mirage that appears as a complex, distorted image of an object or landscape. This illusion occurs when light is refracted by layers of air with different temperatures, creating multiple images that are stacked on top of each other.
Haze: Haze is an atmospheric phenomenon that occurs when tiny particles in the air scatter light and make distant objects appear hazy or indistinct. This can create the illusion that objects are farther away than they actually are.
Superior mirage: Superior mirages occur when the temperature of the air near the ground is colder than the air above. This can cause light to refract upward, creating the appearance that objects are floating above their actual position.
The Moon illusion: The Moon illusion occurs when the Moon appears larger when it is near the horizon than when it is higher in the sky. This illusion is caused by a combination of factors, including the fact that our brains use the size of nearby objects as a reference point for estimating the size of more distant objects.

Discovery of the Illusion

The floating boat illusion, also known as the ghost boat illusion, is not attributed to any particular discoverer or inventor.

Rather, it is a well-known optical illusion that has been observed by many people over time.

The phenomenon is likely to have been noticed by individuals who spent time near clear and calm bodies of water, such as fishermen or sailors, long before it was formally studied or given a name.

The floating boat illusion is now widely recognized and studied by scientists and researchers interested in the science of perception and optical illusions.

References and Resources

In addition to the Floating Boat Illusion, Check out our complete list of illusions.

Invisible Building Illusion

This Invisible Building Illusion taken of a building in Singapore is a “vanishing point” illusion or “vanishing edge” effect.

This occurs when the glass building has a highly reflective surface and the angle of reflection is such that the reflected image appears to merge with the background scenery, making one side of the building seem to disappear. This effect is often used in modern architecture to create the illusion of a seamless integration between the building and the surrounding environment.

If you are interested in learning more about how the Invisible Building Illusion works, scroll down to read more about it.

What is the Invisible Building Illusion?
How does the Invisible Building Illusion work?
Some Similar Illusions
Use the Invisible Building Illusion
References and Resources

What is the Invisible Building Illusion?

The Invisible Building Illusion is a “vanishing point” illusion or “vanishing edge” effect which occurs when the glass building has a highly reflective surface and the angle of reflection is such that the reflected image appears to merge with the background scenery, making one side of the building seem to disappear. This effect is often used in modern architecture to create the illusion of a seamless integration between the building and the surrounding environment.

How does the Invisible Building Illusion Work?

The Invisible Building Illusion is a vanishing edge illusion that occurs when a highly reflective glass building reflects the surrounding scenery in such a way that the reflected image appears to merge with the background. This creates the impression that one side of the building has no physical boundary or edge, and blends seamlessly with the environment.

The illusion is created due to the way light reflects off the surface of the glass. When light hits the glass at a certain angle, it reflects off the surface at an angle that is equal to the angle of incidence. This means that the reflected image appears to be a continuation of the scenery behind the building, as if the building’s glass surface is transparent.

The illusion is further enhanced by the angle of observation. If you are standing in a certain position where you can see both the building and its reflection, your brain tries to make sense of the conflicting information it is receiving from both sources. As a result, your brain may perceive the reflection as a continuation of the scenery behind the building, leading to the vanishing edge effect.

Architects can intentionally use this effect to create visually stunning buildings that seem to blend seamlessly into their surroundings. It’s worth noting that this effect is highly dependent on lighting conditions and the viewer’s angle of observation, so it may not be present at all times of day or from all vantage points.

Some Similar Illusions

There are many illusions like the Invisible Building Illusion that involve the perception of depth, distance, or perspective. Here are a few examples:

Forced perspective: This illusion involves using scale and perspective to create the impression that objects or spaces are larger or smaller than they actually are. For example, a photograph of a person holding up the Leaning Tower of Pisa may create the impression that the tower is smaller than it really is.
Anamorphosis: This illusion involves distorting an image so that it appears normal only when viewed from a certain angle or with a certain tool, such as a cylindrical mirror or a special lens.
Op art: Op art, short for optical art, is a style of art that uses optical illusions to create the impression of movement, depth, or other effects. This can include patterns that appear to vibrate, shimmer, or warp.
Trompe l’oeil: This illusion involves creating an image that is so realistic it appears three-dimensional or as if it is a part of the physical space it is in. This can include paintings of doors or windows that appear to be open or objects that appear to be hanging off the wall.

All of these illusions use visual cues to create the impression of something that is not actually there or to challenge our perception of what is real.

Use of the Invisible Building Illusion

Several artists and architects have used the vanishing point illusion like the Invisible Building Illusion in their work. Here are a few examples:

Leandro Erlich: Argentine artist Leandro Erlich is known for his large-scale installations that use optical illusions to create surreal environments. One of his most famous works is “Dalston House,” a building facade in London that appears to be suspended in mid-air.
Claes Oldenburg: American sculptor Claes Oldenburg created a series of sculptures in the 1960s that used the vanishing point illusion to create the impression of objects disappearing into the ground. One of his most famous works is “Giant Three-Way Plug,” a giant electrical plug that appears to be partially sunk into the ground.
James Turrell: American artist James Turrell creates installations that explore the nature of light and perception. His work often involves using light projections and architectural interventions to create immersive environments that challenge our perception of space and depth.
Norman Foster: British architect Norman Foster is known for his sleek, modernist buildings that often incorporate reflective surfaces and use the vanishing point illusion to create a sense of depth and scale. One of his most famous works is the Hong Kong and Shanghai Bank building in Hong Kong, which features a mirrored facade that reflects the surrounding skyline.

References and Resources

In addition to the Invisible Building Illusion, check out our complete list of illusions.

Singapore is a sovereign city-state and island country located in Southeast Asia.

It is one of the smallest countries in the world, with a total land area of just 728.3 square kilometers (281.2 square miles).

The country is located at the southern end of the Malay Peninsula, and is separated from Indonesia to the south by the Singapore Strait and from Malaysia to the north by the Johor Strait.

Singapore is a highly developed and prosperous country with a diverse economy, strong financial sector, and a population of over 5.7 million people.

It is known for its cleanliness, safety, efficient transportation system, and world-class attractions, including Marina Bay Sands, Gardens by the Bay, and Sentosa Island.

Singapore is also known for its strict laws and regulations, including laws related to littering, chewing gum, and drug offenses.

We hope you enjoyed the Invisible Building Illusion!

Mountain Shadow Illusion

This Mountain Shadow illusion is not exactly an illusion by itself, but it’s really cool. However, the appearance of the shadow can be affected by atmospheric conditions such as haze, fog, or cloud cover. This can cause the shadow to appear softer or more diffuse, which may give the illusion of a larger or more dramatic shadow. So while the mountain shadow effect is a real phenomenon, its appearance can be influenced by various factors in the atmosphere creating an illusion.

A mountain shadow or a mountain-induced shadow occurs when the sun is low in the sky and a mountain casts a long shadow onto the clouds or the ground below.

The shadow can be quite dramatic and may stretch for many miles, depending on the size and shape of the mountain. This effect is often seen at sunrise or sunset when the sun’s rays are at a low angle, and the shadow of the mountain is projected onto the opposite side of the valley or onto the clouds.

What is Mountain Shadow Illusion
How does the Mountain Shadow Illusion
Some Similar Illusions
References and Resources

What is Mountain Shadow Illusion

Mountain Shadow Illusion or a mountain-induced shadow occurs when the sun is low in the sky and a mountain casts a long shadow onto the clouds or the ground below.

The shadow can be quite dramatic and may stretch for many miles, depending on the size and shape of the mountain.

This effect is often seen at sunrise or sunset when the sun’s rays are at a low angle, and the shadow of the mountain is projected onto the opposite side of the valley or onto the clouds.

How does Mountain Shadow Illusion Work?

The Mountain Shadow Illusion or effect occurs when a mountain blocks the path of sunlight, creating a shadow on the ground or in the atmosphere. When the sun is low in the sky, the mountain casts a long shadow that can stretch for many miles, depending on the size and shape of the mountain.

The process behind the mountain shadow effect is relatively simple: the sun’s rays are parallel, and when they hit the mountain, they are blocked in a straight line, creating a sharply defined shadow. The length and size of the shadow depend on the altitude and angle of the sun, the height and width of the mountain, and the distance between the mountain and the observer.

When the sun is low on the horizon, the shadow cast by the mountain can appear very long and may stretch for many miles, even extending beyond the visible horizon. This effect is often seen at sunrise or sunset when the sun’s rays are at a low angle and the shadow of the mountain is projected onto the opposite side of the valley or onto the clouds.

The mountain shadow effect is a fascinating natural phenomenon that is a result of the interaction between sunlight and topography.

Some Similar Illusions

The mountain shadow effect is not an illusion, but rather a real phenomenon caused by the obstruction of the sun’s rays by the mountain. When the sun is low in the sky, the mountain casts a long shadow onto the ground or clouds, and this shadow appears to be much larger than the mountain itself. This is because the sun’s rays are parallel, and when they hit the mountain, they are blocked in a straight line, creating a sharply defined shadow.

However, the appearance of the shadow can be affected by atmospheric conditions such as haze, fog, or cloud cover. This can cause the shadow to appear softer or more diffuse, which may give the illusion of a larger or more dramatic shadow. So while the mountain shadow effect is a real phenomenon, its appearance can be influenced by various factors in the atmosphere.

Here are some other natural phenomena or optical illusions that are similar to the mountain shadow illusion:

Crepuscular rays: These are sunbeams that appear to radiate from the point in the sky where the sun is located. They are often visible at sunrise or sunset when the sun is low on the horizon and is obscured by clouds or other obstacles.
Fata Morgana: This is a complex mirage that can create the illusion of distant objects, such as ships or buildings, appearing to float in the air above the horizon. Fata Morgana is caused by the bending of light as it passes through layers of air with different temperatures and densities.
Green flash: This is a rare optical phenomenon that can occur at sunrise or sunset, where a green flash of light briefly appears on the horizon as the sun disappears below or emerges from the horizon. The green flash is caused by the refraction of sunlight by the Earth’s atmosphere.
Sundogs: These are bright spots or patches of light that can appear on either side of the sun when it is low on the horizon. Sundogs are caused by the refraction of sunlight by ice crystals in the atmosphere.
Mirage: A mirage is an optical illusion in which distant objects appear to be distorted, displaced or inverted. This occurs due to the refraction of light as it passes through layers of air with different temperatures and densities.

These are just a few examples of the many fascinating natural phenomena and optical illusions that occur in the world around us.

References and Resources

In addition to the Mountain Shadow illusion, check out our complete list of illusions.

The mountain shadow illusion or effect is a natural phenomenon that has been observed by people for centuries, and there is no one person who can be credited with its discovery or popularization. People have likely been fascinated by the dramatic shadows cast by mountains since ancient times.

The phenomenon has been depicted in art and literature throughout history, and it continues to be a source of inspiration for artists and photographers today. In modern times, the mountain shadow effect has also been studied by scientists and meteorologists, who have used it to gain insights into atmospheric conditions and weather patterns.

So while there may not be a single person who can be credited with discovering or popularizing the mountain shadow effect, it is a fascinating natural phenomenon that has captured the imaginations of people throughout history.