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このページは大阪弁化フィルタによって翻訳生成されたんですわ。 |
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| 2012-03 | Focus?1? | 2? | 3 | 4 (in German) |
| 2011-07 | Demand from China so high that my domain was down a day |
| 2009-10 | in abc News |
| 2008-09 | portrayed by Die ZEIT |
| 2008-04 | referenced by NY Times |
| 2007-11 | portrayed in fudder |
| 2007-11 | daVinci ? 3sat |
| 2007-10 | Planetarium Freiburg |
| 2007-06 | Bayerisches Fernsehen: Faszination Wissen |
| 2006-09 | Dugg, →4.5 million hits/day |
| 2006-08 | Focus online |
| 2005-10 | PC Magazine: a Top 101 Site |
| 2005-08 | BBC Online |
| 2005-08 | the Mac Observer |
| 2005-07 | Planetarium Freiburg |
| 2005-06 | a > 2 million hits/days spike |
| 2005-05 | “Image of the week” by Viperlib |
| 2005-05 | > 1 million hits/day |
| 2005-02 | “Web Pick” by Yahbooks |
| 2004-12 |  10 cool sites award |
| 2004-11 | TV: Discoveries, Sci Chan |
| 2004-11 | NSDL Reports Life Sci |
| 2004-10 | Highlighted in Science |
| 2004-10 | > 500,000 hits/day |
| 2004-09 | Wikipedia |
| 2004-03 | N?rnberger Nachrichten |
| 2004-03 | Brainweek |
| 2004 | Yahoo Directory |
| 2003-09 | > 100,000 hits/day |
| 2012-09-19 | Contour Adaptation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2012-05-18 | Colour Wagon Wheel | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2012-05-07 | Tilt | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2012-05-01 | Delboeuf | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2012-04-13 | Jastrow | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2012-04-01 | New Stepping Feet | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2012-03-07 | Improved SAM | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2012-03-04 | Improved Caf? Wall | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2011-12-11 | Leaning Towers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2011-11-13 | Spine Drift | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2011-11-13 | New technology to replace Flash, namely “Cappucino” | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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99 Visual Phenomena & Optical Illusions
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2012-05 Time to move on: all content here will migrate to HTML5. I do not have the resources to support older browsers. If something does not work, there are excellent free browsers: Chrome, FireFox, Opera, Safari.
These pages demonstrate visual phenomena, and ?optical? or ?visual illusions?. The latter is more appropriate, because most effects have their basis in the visual pathway, not in the optics of the eye. Emphasis here is on interactivity and understanding of the visual mechanisms involved, to the degree they are understood.
Don’t get distressed if you don’t see all the effects described, even if trying carefully. For many illusions, there is a percentage of people with perfectly normal vision (and character ;-) who just don’t see it, often for reasons currently unknown. [Also: like avoiding to dry your cat in the microwave, please simply stop if you feel the images are a strain. While the former is probably an urban legend, the latter is my legal disclaimer.]
You may be glad to know: There are no tasteless surprises here; you know, these infantile pranks where you scrutinize a picture and suddenly an ugly face (or the opposite end) screams at you…
Most visitors of this site are not vision scientists, so you might find the explanatory attempts too highbrow. That is not on purpose, but, like any science, vision research just is not trivial. So, if the explanation seems gibberish, simply enjoy the phenomenon ;?). Otherwise, there is a short paper: Bach & Poloschek (2006) Optical Illusions primer.
?Optical illusion? sounds pejorative, as if exposing a malfunction of the visual system. Rather, I view these phenomena as bringing out particular good adaptations of our visual system to standard viewing situations. These adaptations are ?hard-wired? in our brains, and thus under some artificial manipulations can cause inappropriate interpretations of the visual scene. As Purkinje put it: ?Illusions of the senses tell us the truth about perception? (cited by Teuber 1960).
Before we delve in, I’d like to express my thanks to the many visitors who gave overwhelmingly positive @feedback, adding constructive advice on content and style ; please do keep it coming! [Or use the guestbook.] I have also been able to improve explanations when convincing scientific evidence was sent ;-). Yes, it does take sizable resources to set up and maintain this, but it is also very rewarding, bringing me into contact with so many charming people. Should you want to give back, simply link to this page or use the donation link ;-). Any advice is appreciated ? and, yes, for a non-native speaker, English does represent sizable challenges.
2010-05: We lost Richard Gregory, brilliant, warm-hearted, and inspiring researcher of optical illusions and much more.
I support an enlightened, rational world view, e.g. no homeopathy.
| Note: most of the demonstrations require the free players for Apple’s Quicktime and Macromedia’s/Adobe’s Flash , both available for several platforms; some graphics are in PNG format. | Best viewed without microsoft |
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