Top all-time · #1468
Michael Bach
Personal blog · michaelbach.desciencedesign
Michael Bach writes Home, a personal blog at michaelbach.de about science and design. Since 2007, 51 different Hacker News readers have linked it 52 times, most often “Optical Illusions and Visual Phenomena”. No feed was found, so read it on the site itself.
Michael Bach’s home page, starting point for all content
Most-linked posts?
- Optical Illusions and Visual Phenomena9 people · 9 mentions · first linked 2020-11-07
- “Pigeon Neck” Illusion3 people · 3 mentions · first linked 2020-02-07
- Eyeball hacking3 people · 3 mentions · first linked 2008-07-27
- Benham's Top2 people · 2 mentions · first linked 2014-06-15
What Hacker News says?
It's not a great visual, but like this: https://michaelbach.de/ot/cog-Dalmatian/
Comment linking /ot/cog-Dalmatian/
on “Show HN: The text disappears when you screenshot it”Submitted Optical Illusions and Visual Phenomena as a story · 102 points
HN discussionPossibly this: https://michaelbach.de/ot/
Comment linking /ot/
on “You want to know something about how bullshit insane our brains are? (2018)”Submitted Cool Illusion - Motion Induced Blindness as a story · 76 points
HN discussionYeah, watching an infinite zoom will definitely leave you with a few seconds of motion "aftereffect."[1] [1] https://michaelbach.de/ot/mot-adapt/
Comment linking /ot/mot-adapt/
on “Infinitely zooming botanical floral paradise painting”Submitted Motion Induced Blindness as a story · 43 points
HN discussionThere are optical illusions ... https://michaelbach.de/ot/
Comment linking /ot/
on “Adversarial.io – Fighting mass image recognition”Submitted Optical Illusions and Visual Phenomena and Explanations as a story · 10 points
HN discussionI used to have a printout of https://www.michaelbach.de/ot/mot-snakes/index.html over my desk. People got so freaked out by a piece of paper "moving" that there were people who literally refused to go to my desk. :-)
Comment linking /ot/mot-snakes/index.html
on “Perceptual Illusions”Submitted McCollough Effect – change your brain for a prolonged time as a story · 7 points
HN discussionAnother site in a similar vein, which is worth a mention. https://michaelbach.de/ot/
Comment linking /ot/
on “Akiyoshi's Illusion Pages”Submitted Benham’s Top (2002) as a story · 4 points
HN discussionConsider the following visual phenomena / optical illusion: https://michaelbach.de/ot/sze-silhouette/index.html The silhoute may be perceived as rotating clockwise or counterclockwise. There is not in fact enough information to determine which direction objectively. Now suppose 2 types of experiments: A) someone wears spy glasses and observes this effect, and is tasked to regularly speak out what direction (s)he per…
Comment linking /ot/sze-silhouette/index.html
on “The hallucinatory thoughts of the dying mind”Submitted Optical Illusions and Visual Phenomena as a story · 3 points
HN discussionI was looking into this when the 12-dot illusion came out, and found an interesting refutation of the receptive field theory regarding a related illusion - the original Hermann grid. I'm not sure if it also applies to the 12-dot illusion, where the illusion seems to be more about foveal/peripheral accuracy. You can read about it here, and play with a demo: http://www.michaelbach.de/ot/lum-herGridCurved/index.html ht…
Comment linking /ot/lum-herGridCurved/index.html
on “The basic neurobiology behind the 12-dot illusion”Submitted Eyeball hacking as a story · 3 points
HN discussionI've seen the reverse phi illusion effect crop up a few times in various places. [0] But as the paper says, it typically involved changing the luminance of the foreground object. It's cool to get a breakdown of exactly what makes this effect tick. Are there any other good non-static optical illusions such as this? As in illusions which require some element that changes over time cyclically in order to produce the ef…
Comment linking /ot/mot-reversePhi/index.html
on “The Perpetual Diamond: Contrast Reversal Along Edges Create Appearance of Motion”Submitted Visual Phenomena and Optical Illusions as a story · 2 points
HN discussionThe reference links are also pretty cool: https://michaelbach.de/ot/mot-pigeonNeck/index.html
Comment linking /ot/mot-pigeonNeck/index.html
on “Stepping Feet Illusion”Submitted 151 Illusions and Visual Phenomena as a story · 2 points
HN discussionWhen you see how our visual system works with so much heuristics and hacks the surprising part is that we are able to get things right the major part of the time. http://www.michaelbach.de/ot/ But that is not so scary as when you realize that the rest of things, like how we reason, have the same kind of weird hacks and hacky solutions fine tuned to live in Africa 250,000 years ago. So humans can design a super-compl…
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on “The Moon Illusion, an Unsolved Mystery”Submitted Pulfrich Effect as a story · 2 points
HN discussionThis one? https://michaelbach.de/ot/lum-adelsonCheckShadow/index.html
Comment linking /ot/lum-adelsonCheckShadow/index.html
on “Optical Illusions and Visual Phenomena”Submitted Optical Illusions and Visual Phenomena And Explanations, Where Possible as a story · 2 points
HN discussionMy senior research thesis in undergrad was based on this illusion, using it to render basic heightmaps in a constant top-down orientation. This made the technique usable on PDAs and Web games at a time when even 2D isometric rendering was too slow/battery intensive. https://michaelbach.de/ot/ang-KitaokaBulge/index.html
Comment linking /ot/ang-KitaokaBulge/index.html
on “Optical Illusions and Visual Phenomena”Submitted Chromostereopsis as a story · 2 points
HN discussionAmes window is very cool. https://michaelbach.de/ot/sze-AmesBallerina/index.html , but I like this video better: https://youtu.be/DkVOIJAaWO0?t=233 (timestamped at the most interesting place, but the whole thing is worth a watch)
Comment linking /ot/sze-AmesBallerina/index.html
on “Optical Illusions and Visual Phenomena”Submitted “Tusi” Motion as a story · 2 points
HN discussionThis is my favorite optical illusion: https://michaelbach.de/ot/col-McCollough/index.html Unlike ordinary optical illusions, the McCollough effect alters your color perception for days or even weeks after you've finished adapting to it. The mechanism is still not understood.
Comment linking /ot/col-McCollough/index.html
on “Optical Illusions and Visual Phenomena”Submitted “Pigeon Neck” Illusion as a story · 2 points
HN discussion
