I agree with Carol that the illusion is a sophisticated variant of the Ames room. The basic idea is that one can use the rules of perspective to produce an image to a static eye (in this case the camera eye) with specific (but incorrect) size-depth-location information.
The suggestion in the diagram is that the tower is not rising vertically but is actually reclining and receding in space. That would be a typical approach. Here are some examples--with photos from the "right" and "wrong" locations.
http://users.skynet.be/J.Beever/pave.htm Ken --------------------------------------------------------------- Kenneth M. Steele, Ph.D. [email protected] Professor Department of Psychology http://www.psych.appstate.edu Appalachian State University Boone, NC 28608 USA --------------------------------------------------------------- On 2/19/2011 11:48 PM, Carol DeVolder wrote:
The water wheel is a darned good example of impossible motion. I think we discussed this before when Sci Am's best optical illusion contest winners for 2010 came out: http://illusioncontest.neuralcorrelate.com/cat/top-10-finalists/2010/#post-2016** or *http://tinyurl.com/279cbu9* . This is one example of impossible motion, here's another:http://www.wat.tv/video/impossible-motion-2qd9x_2exyf_.html or *http://tinyurl.com/6at6zsn* . It's basically a much more sophisticated variant of the Ames room where the eye is fooled by lighting, camera angles, and position of the structure.I believe there's a creek or a river in Wyoming (Wind River?) that appears to be a real life example. My 2 cents. Carol On Sat, Feb 19, 2011 at 9:57 PM, <[email protected] <mailto:[email protected]>> wrote: On 19 Feb 2011 at 22:35, Mike Palij wrote: > It's not the answer you want but maybe the answer you need; see: > http://michaelbach.de/ot/cog_impossWFallMcwolles/index.html > OK, that's interesting, but wouldn't you say this comment is something of a letdown? "There is a trick to the waterflow. While I have a strong suspicion, I will not disclose it here unless the creator does so himself." Thanks for nothing, Michaelbach! Stephen -------------------------------------------- Stephen L. Black, Ph.D. Professor of Psychology, Emeritus Bishop's University Sherbrooke, Quebec, Canada e-mail: sblack at ubishops.ca <http://ubishops.ca> --------------------------------------------- -- Carol DeVolder, Ph.D. Professor and Chair, Department of Psychology St. Ambrose University 518 West Locust Street Davenport, Iowa 52803 563-333-6482
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