The break of the curveball - Optical Illusion


	The break of the curveball - Optical Illusion

tabsey

6-5-2009 8:16 AM

324 views

tags:

illusion

tabsey says:

Have to visit the source. Tis a very good and simple illusion, which wouldn't clip.
Read the instructions.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/d2d17f91-9525-4539-98d6-6b182bd999cb/81E9C53D-22ED-4CB5-B535-17C27882C3AC/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/" href="http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/" style="font-size: 11px;">illusioncontest.neuralcorrelate.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/"><DIV class="prize">2009 First prize</DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/"><DIV class="authors"><A href="">Arthur Shapiro</A>, <A href="">Zhong-Lin Lu</A>, <A href="">Emily Knight</A>,  & <A href="">Robert Ennis</A>
<DIV class="afil">American University, University of Southern California, Dartmouth College, SUNY College of Optometry, USA</DIV>
</DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/"><P>In baseball, a curveball creates a physical effect and a perceptual puzzle. The physical effect (the curve) arises because the ball’s rotation leads to a deflection in the ball’s path.  The perceptual puzzle arises because the deflection is actually gradual but is often perceived as an abrupt change in direction (the break).  Our illusions suggest that the perceived  “break” may be caused by the transition from the central visual system to the peripheral visual system.  Like a curveball, the spinning disks in the illusions appear to abruptly change direction when an observer switches from foveal to peripheral viewing. </P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/81E9C53D-22ED-4CB5-B535-17C27882C3AC/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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