Squaring the Diamond illusion at Illusion Sciences
Category Archives: Illusions
Two-Minute Drill
10 optical illusions in 2 minutes
via Neurophilosophy
Out of Business?
The illusion business. Posting them, that is. Too much direct competition: Illusion Sciences
Illusions and explanations, by an illusion designer and psychologist
Bonus: Illusion of the year contest, top 10 finalists
via Cognitive Daily
Antigravity Perfected
Of course, the real explanation here is that this is a stroboscopic effect, aka the wagon wheel effect — the rotor speed and the film speed are matched (to some ratio) so there is no apparent movement of the blades for each frame of the camera.
Try it yourself and alias your monitor’s refresh frequency
Hup, Two, Three, Four
Stepping Feet Illusion and radial version
Many other illusions at the site, including some favorites such as
Pinna-Brelstaff Illusion though I never actually call it that
Roget’s ‘Palisade’ Illusion I’ve seen a similar effect while walking past a door and seeing a crt monitor through the narrow gap between the door and jamb.
Motion Binding has a subtle demonstration about orthogonal dimensions really being independent
Here’s the index in case you want to pick and choose, rather than march through all of them
Laser Illusions
Two fun things that taste great together.
Is it Jason Latimer, or only someone that looks like Jason Latimer?
Castle Illusion
FX
Check out this illusion over at Cognitive Daily, along with all the explanation that goes with it.
I think illusions are pretty neat. They are also a reminder to not trust what you think you are seeing, since our vision is relative and we also see patterns because we impress them on data.