#opticalillusion — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #opticalillusion, aggregated by home.social.
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So I finally met a dog that just saw itself in the mirror and was trying to make friends
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“A Randominium #003” by Thomas Typewriter – a new illustration
"A Randominium #003" by Thomas Typewriter (digital, 30"w x 30"h) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).https://thomastypewriter.art/2026/08/14/a-randominium-003-by-thomas-typewriter-a-new-illustration/
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“Grid’Dulles #010” by Thomas Typewriter – a new painting
"Grid'Dulles #010" by Thomas Typewriter (mixed media, 36"w x 24"h, pen & ink on bristol board digitally composited with vector graphics) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).https://thomastypewriter.art/2026/08/10/griddulles-010-by-thomas-typewriter-a-new-painting/
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“Grid’Dulles #009” by Thomas Typewriter – a new painting
"Grid'Dulles #009" by Thomas Typewriter (mixed media, 36"w x 24"h, pen & ink on bristol board digitally composited with vector graphics) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).https://thomastypewriter.art/2026/08/05/griddulles-009-by-thomas-typewriter-a-new-painting/
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Coming Through! (12 Photos)
The wall is only part of the trick. From Matawan Creek to a station bridge in Portsmouth, architecture becomes part of every illusion. Across these 12 works, animals, people, and machines seem to push through drains, tunnels, walls, and corners. More: 10 Street Art Illusions That Fool the Eye 🦈 Matawan Creek Shark Mural — By Bob Anfuso (“Tattoo Bob”) in Matawan, New Jersey, USA 🇺🇸 Bob Anfuso, known as “Tattoo Bob,” turned the opening beneath a railroad trestle over […]https://streetartutopia.com/2026/08/03/jaw-dropping-street-art-that-looks-like-its-coming-through/
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Optical Illusion: When your photo looks like it could show either the sun reflected off a lake or blazing in the sky. Too much smoke over Montana for a view like that today.
#Montana #sun #clouds #lake #sky #smoke #opticalillusion #Monday #weather #photography
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“A Randominium #002” by Thomas Typewriter – a new illustration
"A Randominium #002" by Thomas Typewriter (digital, 30"w x 30"h, vector graphics) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).https://thomastypewriter.art/2026/07/22/a-randominium-002-by-thomas-typewriter-a-new-illustration/
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In this photo, the bag looks like a black cat from afar. It's kind of hilarious 😆 because I keep thinking one of the black cats are sitting there.
#cats #catsofmastodon #opticalillusion -
Si pasas de largo, no se estarán quietas. Es la ilusión óptica geométrica "Bambúes" de Akiyoshi Kitaoka producida por el contraste del brillo entre los rectángulos blancos y negros. #ilusionoptica #opticalillusion
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“Quadratic Sensations #007” by Thomas Typewriter – a new painting
"Quadratic Sensations #007" by Thomas Typewriter (mixed-media, 24"w x 36"h, watercolor & gesso plus pen & ink on bristol board digitally composited with vector graphics) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter). -
Before there was AI there was magic, there was cleverness, there was Zach King!
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“Grid’Dulles #008” by Thomas Typewriter – a new painting
If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).https://thomastypewriter.art/2026/06/17/griddulles-008-by-thomas-typewriter-a-new-painting/
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“The #22 Bricks” by Thomas Typewriter – a new illustration
"The #22 Bricks" by Thomas Typewriter (digital, 36"w x 24"h, vector illustration) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).https://thomastypewriter.art/2026/06/15/the-22-bricks-by-thomas-typewriter-a-new-illustration/
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“The #21 Bricks” by Thomas Typewriter
"The #21 Bricks" by Thomas Typewriter (digital, 24"w x 36"h, vector illustration) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).https://thomastypewriter.art/2026/06/10/the-21-bricks-by-thomas-typewriter/
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The #20 Bricks” by Thomas Typewriter – a new illustration
"The #20 Bricks" by Thomas Typewriter (digital, 24"w x 36"h, vector illustration) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).https://thomastypewriter.art/2026/06/08/the-20-bricks-by-thomas-typewriter-a-new-illustration/
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Nine Purple Dots
I posted this little optical illusion yesterday on BlueSky and it proved so popular I thought I’d repeat it here.Whichever of the purple dots you look directly at turns more purple:
I find the effect is stronger on a smaller screen (e.g. on a phone).
In a nutshell, this happens because your eyes have reduced sensitivity to blue light at the centre of your field of view so the purple (which is a mixture of red and blue) changes hue if you look directly at it. For more details see here and the following blog post:
https://www.schulz-hildebrandt.com/9-purple-dots-illusion/
I’m interested to know whether or not this works for people who are colour blind, so if that is you please let me know!
#arXiv250911582 #colourPerception #opticalIllusion #optics -
TIL about the Pulfrich effect, whereby lateral motion can be perceived as depth due to timing differences (signal delay) between the eyes.
https://www.youtube.com/watch?v=Q-v4LsbFc5c
The effect can be triggered by wearing sunglasses in such a way that only one eye is covered. 🤪 🕶️
Then you can play "Jim Power: The Lost Dimension in 3D" (SNES, 1993) and the background layer will appear further away (but only when moving).
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“The #19 Bricks” by Thomas Typewriter – a new illustration
https://thomastypewriter.art/2026/06/01/the-19-bricks-by-thomas-typewriter-a-new-illustration/
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This Javelin Thrower Looks Like He is Impaling Himself in Crazy Optical Illusion Photo https://petapixel.com/2026/05/29/this-javelin-thrower-looks-like-he-is-impaling-himself-in-crazy-optical-illusion-photo/ #opticalillusion #athletics #Features #athlete #javelin #timing
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#Polyhedron #Polygons #tiles #opticalillusion #MathArt #MathsArt
The video in this post by @graveolensa
https://mathstodon.xyz/@graveolensa/115885487505867437
about people with 4 color cones having a sphere's worth of hues is fascinating but, being a trichromat, i don't fully understand it or know if its correct. Here is a mathematically simple but scientifically crude analogy between trichromaticity and tetrachromaticity.
A note on the figures, although this is about color vision and the figures have been colored the colors in the figures are just rough guides for trichromats, which most people are. This analogy is too crude for the colors to precisely match a trichromat's color experiences.
The visible spectrum is rounded off to the interval [415 THz, 715 THz]. The cone cells' activation, as a function of the frequency of monochromatic light they receive, are idealized to the piecewise linear spectral sensitivity curves shown in the figure. They are surjective to \([0,1]\) so as to implement Ooqui's "rule of hue". Call them \(r(\nu)\) (red cone), \(g(\nu)\) (green cone), and \(b(\nu)\) (violet cone).
Each cone type has exactly 1 frequency of monochromatic light where it is the only type of cone that is activated and that cone's activation is 1 at that frequency. These frequencies are 415, 565, and 715. At every other frequency in the visible spectrum exactly 2 cone types are activated by monochromatic light and the activation of at least one of them is 1.
(1/6)
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A square paving with hexagons, Yogyakarta, Java, Indonesia
The leaves and cracks almost look like small trees
#TilingTuesday #geometry #tiling #MathArt #photography #design #TravelPhotography #Yogyakarta #Java #Indonesia #OpticalIllusion
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🖼️🏭 Street artists paint directly onto high-resolution #photos of dams and power stations. Photographer Joseph Ford then re-photographs these works at the original sites to produce a seamless visual alignment between the #art and the #environment.
👉 https://www.thisiscolossal.com/2026/04/joseph-ford-impossible-street-art-photography-infrastructure/
#photography #infrastructure #streetart #engineering #illusion #creativity #opticalillusion
