ALTER43



Untitled

I participate in Tumblr on two levels, as a blogger and as an artist. As a member of the blog community, I am the curator and publisher of my own eclectic archive of photography, art, quotes, video and music. As an artist, Tumblr has become the first venue for the exhibition of my own digital images from the groups "Particles and Waves" and "Extrusion Maps." I appreciate the free exchange with other members and the sharing of my collection, as well as the exhibition of my own work within such an easy to use, non-commercial environment.

http://www.douglasprince.com/


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klammer
Monday, Aug 06th, 2012
Reverse spokes Another cool illusion is the “reverse spokes” illusion, which has been studied by Anstis and Rogers (and probably discovered as well. Anstis describes the illusion very modestly as “new, or newish”.). As you can see in the image below, the spokes (the grey lines separating the “pie-slices”) appear to be rotating clockwise. On closer inspection you can clearly see that this is not the case. In fact, what is happening is that a “colour wave” traverses the wheel in a counterclockwise direction. That’s weird. The actual movement is in the opposite direction of the movement that we perceive! (you can download a script here to generate these types of animations)

Reverse spokes

Another cool illusion is the “reverse spokes” illusion, which has been studied by Anstis and Rogers (and probably discovered as well. Anstis describes the illusion very modestly as “new, or newish”.). As you can see in the image below, the spokes (the grey lines separating the “pie-slices”) appear to be rotating clockwise. On closer inspection you can clearly see that this is not the case. In fact, what is happening is that a “colour wave” traverses the wheel in a counterclockwise direction. That’s weird. The actual movement is in the opposite direction of the movement that we perceive! (you can download a script here to generate these types of animations)

∞07:31 am, by alter435 notes

Notes
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