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Oops, cut-and-paste typo: Michael Bach's interactive version is at
http://www.michaelbach.de/ot/sze_silhouette/index.html
At 11:09 AM 11/11/2008, you wrote:
>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>Incorporated, a worldwide network of science museums and related institutions.
>*****************************************************************************
>
>That's a well-done version of an old visual phenomenon. To give proper
>credit, this was designed by Nobuyuki Kayahara in 2003, and you can see
>the original here: http://www.procreo.jp/labo/silhouette.swf It has
>nothing to do with right-brain / left-brain differences; somehow that
>erroneous "explanation" got attached to this and became a viral e-mail in 2007.
>
>Some experiments you can try:
>
>(1) Look at a mirror image of the illusion (either a software reversal,
>or in an actual mirror). Does the mirror image spin the same way, or
>opposite? Does it matter whether you use a horizontal or vertical mirror
>image?
>(2) Run two identical copies of the illusion side-by-side. Do they spin,
>and change direction, in synchrony? What if they're mirror images?
>(3) Look at it with a dark filter over one eye,and then the other. Does
>that affect the direction of spin? (This would now be the Pulfrich
>effect, which Eric Siegel referenced.)
>
>For more explanation, and the chance to try two more experiments, check
>out Michael Bach's interactive version:
>http://www.procreo.jp/labo/silhouette.swf
>
>-Richard
>
>At 05:50 AM 11/11/2008, you wrote:
>
>>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>>Incorporated, a worldwide network of science museums and related
>>institutions.
>>*****************************************************************************
>>
>>Like the one posted a few months ago where the b&w picture suddenly
>>became color - this one has me stumped.....any answers?
>>
>>http://tinyurl.com/33va3f
>>
>>Just because it is described as a left/right brain artifact, knowing
>>that does nothing to help me understand why!
>>
>>
>>
>>
>>
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