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<rss version="2.0" xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/" xmlns:media="http://search.yahoo.com/mrss/"><channel><title>Illusions Gift Shop: Zazzle.com Store: </title><link>http://feed.zazzle.com/z.2/api/find.aspx?ft=rss&amp;ch=illusioncontest&amp;ou=%2fillusioncontest%2frss</link><description></description><language>en-us</language><pubDate>Wed, 22 May 2013 12:28:48 GMT</pubDate><ttl>60</ttl><opensearch:totalResults>71</opensearch:totalResults><opensearch:startIndex>1</opensearch:startIndex><opensearch:itemsPerPage>60</opensearch:itemsPerPage><opensearch:Query role="request" searchTerms="" />
<item><guid isPermaLink="false">http://www.zazzle.com/rotating_tilted_lines_t_shirt-235611560874523744</guid><pubDate>Sat, 09 May 2009 04:41:40 GMT</pubDate><title><![CDATA[Rotating Tilted Lines T-shirt]]></title><link>http://www.zazzle.com/rotating_tilted_lines_t_shirt-235611560874523744</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget0" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/rotating_tilted_lines_t_shirt-235611560874523744" id="page_zWidget0-imageLink" class="dX-realviewLink">
				<img id="page_zWidget0-preview" src="http://rlv.zcache.com/rotating_tilted_lines_t_shirt-rf8c22e9f24154c04810a3b7ffcd58231_va6lr_152.jpg" alt="Rotating Tilted Lines T-shirt" title="Rotating Tilted Lines T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget0-info">
		
		
		<div class="">
			
				<span class="gbb-price">$26.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/rotating_tilted_lines_t_shirt-235611560874523744" id="page_zWidget0-title" class="gbb-productTitle" title="Rotating Tilted Lines T-shirt">Rotating Tilted Lines T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget0-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$26.95</price><media:title><![CDATA[Rotating Tilted Lines T-shirt]]></media:title><media:description><![CDATA[). Approaching these figures, maintaining central fixation, a strong illusory rotation in the circles, composed by the tilted lines, is experienced. It is possible to see also illusory streaming rotation in the space between the circles of tilted lines, typical of the Enigma Illusion]]></media:description><media:price>$26.95</media:price><media:thumbnail url="http://rlv.zcache.com/rotating_tilted_lines_t_shirt-rf8c22e9f24154c04810a3b7ffcd58231_va6lr_152.jpg" /><media:content url="http://rlv.zcache.com/rotating_tilted_lines_t_shirt-rf8c22e9f24154c04810a3b7ffcd58231_va6lr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/stereo_vision_illusory_contours_t_shirt-235948165301000091</guid><pubDate>Thu, 07 May 2009 02:05:19 GMT</pubDate><title><![CDATA[Stereo Vision Illusory Contours T-shirt]]></title><link>http://www.zazzle.com/stereo_vision_illusory_contours_t_shirt-235948165301000091</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget1" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/stereo_vision_illusory_contours_t_shirt-235948165301000091" id="page_zWidget1-imageLink" class="dX-realviewLink">
				<img id="page_zWidget1-preview" src="http://rlv.zcache.com/stereo_vision_illusory_contours_t_shirt-r2e97fc64bd7c473eb226baf4a2a92b60_804gs_152.jpg" alt="Stereo Vision Illusory Contours T-shirt" title="Stereo Vision Illusory Contours T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget1-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/stereo_vision_illusory_contours_t_shirt-235948165301000091" id="page_zWidget1-title" class="gbb-productTitle" title="Stereo Vision Illusory Contours T-shirt">Stereo Vision Illusory Contours T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget1-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[Stereo Vision Illusory Contours T-shirt]]></media:title><media:description><![CDATA[Design by Davi Geiger and Hiroshi Ishikawa]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/stereo_vision_illusory_contours_t_shirt-r2e97fc64bd7c473eb226baf4a2a92b60_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/stereo_vision_illusory_contours_t_shirt-r2e97fc64bd7c473eb226baf4a2a92b60_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/ellusive_arch_ladies_t_shirt-235763111352765459</guid><pubDate>Thu, 07 May 2009 01:35:43 GMT</pubDate><title><![CDATA[Ellusive Arch Ladies T-shirt]]></title><link>http://www.zazzle.com/ellusive_arch_ladies_t_shirt-235763111352765459</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget2" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/ellusive_arch_ladies_t_shirt-235763111352765459" id="page_zWidget2-imageLink" class="dX-realviewLink">
				<img id="page_zWidget2-preview" src="http://rlv.zcache.com/ellusive_arch_ladies_t_shirt-r966f880c3fd846b396ae2666b991ca6d_8nh9t_152.jpg" alt="Ellusive Arch Ladies T-shirt" title="Ellusive Arch Ladies T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget2-info">
		
		
		<div class="">
			
				<span class="gbb-price">$30.05</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/ellusive_arch_ladies_t_shirt-235763111352765459" id="page_zWidget2-title" class="gbb-productTitle" title="Ellusive Arch Ladies T-shirt">Ellusive Arch Ladies T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget2-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$30.05</price><media:title><![CDATA[Ellusive Arch Ladies T-shirt]]></media:title><media:description><![CDATA[Shading is a powerful way to represent the relief of 3-dimensional objects in pictures. However, the way our vision interprets shaded images depends on the shape of their contours. Here two different contours of the same shading pattern convey two different reliefs, joined into an impossible object.]]></media:description><media:price>$30.05</media:price><media:thumbnail url="http://rlv.zcache.com/ellusive_arch_ladies_t_shirt-r966f880c3fd846b396ae2666b991ca6d_8nh9t_152.jpg" /><media:content url="http://rlv.zcache.com/ellusive_arch_ladies_t_shirt-r966f880c3fd846b396ae2666b991ca6d_8nh9t_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/ellusive_arch_t_shirt-235934372995370716</guid><pubDate>Thu, 07 May 2009 01:19:27 GMT</pubDate><title><![CDATA[Ellusive Arch T-shirt]]></title><link>http://www.zazzle.com/ellusive_arch_t_shirt-235934372995370716</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget3" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/ellusive_arch_t_shirt-235934372995370716" id="page_zWidget3-imageLink" class="dX-realviewLink">
				<img id="page_zWidget3-preview" src="http://rlv.zcache.com/ellusive_arch_t_shirt-r1995cbeafa89443fb8a09d6a24441b77_804gs_152.jpg" alt="Ellusive Arch T-shirt" title="Ellusive Arch T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget3-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/ellusive_arch_t_shirt-235934372995370716" id="page_zWidget3-title" class="gbb-productTitle" title="Ellusive Arch T-shirt">Ellusive Arch T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget3-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[Ellusive Arch T-shirt]]></media:title><media:description><![CDATA[Shading is a powerful way to represent the relief of 3-dimensional objects in pictures. However, the way our vision interprets shaded images depends on the shape of their contours. Here two different contours of the same shading pattern convey two different reliefs, joined into an impossible object.]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/ellusive_arch_t_shirt-r1995cbeafa89443fb8a09d6a24441b77_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/ellusive_arch_t_shirt-r1995cbeafa89443fb8a09d6a24441b77_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/ellusive_arch_coffee_mug-168943734993338294</guid><pubDate>Thu, 07 May 2009 01:17:31 GMT</pubDate><title><![CDATA[Ellusive Arch Coffee Mug]]></title><link>http://www.zazzle.com/ellusive_arch_coffee_mug-168943734993338294</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget4" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/ellusive_arch_coffee_mug-168943734993338294" id="page_zWidget4-imageLink" class="dX-realviewLink">
				<img id="page_zWidget4-preview" src="http://rlv.zcache.com/ellusive_arch_coffee_mug-r570f68a33b8f4ba4a8f871c4eb18e0a3_x7jp5_8byvr_152.jpg" alt="Ellusive Arch Coffee Mug" title="Ellusive Arch Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget4-info">
		
		
		<div class="">
			
				<span class="gbb-price">$16.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/ellusive_arch_coffee_mug-168943734993338294" id="page_zWidget4-title" class="gbb-productTitle" title="Ellusive Arch Coffee Mug">Ellusive Arch Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget4-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$16.95</price><media:title><![CDATA[Ellusive Arch Coffee Mug]]></media:title><media:description><![CDATA[Shading is a powerful way to represent the relief of 3-dimensional objects in pictures. However, the way our vision interprets shaded images depends on the shape of their contours. Here two different contours of the same shading pattern convey two different reliefs, joined into an impossible object.]]></media:description><media:price>$16.95</media:price><media:thumbnail url="http://rlv.zcache.com/ellusive_arch_coffee_mug-r570f68a33b8f4ba4a8f871c4eb18e0a3_x7jp5_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/ellusive_arch_coffee_mug-r570f68a33b8f4ba4a8f871c4eb18e0a3_x7jp5_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/ellusive_arch_postcard-239019117627813949</guid><pubDate>Thu, 07 May 2009 01:14:52 GMT</pubDate><title><![CDATA[Ellusive Arch Postcard]]></title><link>http://www.zazzle.com/ellusive_arch_postcard-239019117627813949</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget5" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/ellusive_arch_postcard-239019117627813949" id="page_zWidget5-imageLink" class="dX-realviewLink">
				<img id="page_zWidget5-preview" src="http://rlv.zcache.com/ellusive_arch_postcard-red83bb79902b41ec8a04b2966024cc72_vgbaq_8byvr_152.jpg" alt="Ellusive Arch Postcard" title="Ellusive Arch Postcard" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget5-info">
		
		
		<div class="">
			
				<span class="gbb-price">$0.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/ellusive_arch_postcard-239019117627813949" id="page_zWidget5-title" class="gbb-productTitle" title="Ellusive Arch Postcard">Ellusive Arch Postcard</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget5-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$0.95</price><media:title><![CDATA[Ellusive Arch Postcard]]></media:title><media:description><![CDATA[Shading is a powerful way to represent the relief of 3-dimensional objects in pictures. However, the way our vision interprets shaded images depends on the shape of their contours. Here two different contours of the same shading pattern convey two different reliefs, joined into an impossible object.]]></media:description><media:price>$0.95</media:price><media:thumbnail url="http://rlv.zcache.com/ellusive_arch_postcard-red83bb79902b41ec8a04b2966024cc72_vgbaq_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/ellusive_arch_postcard-red83bb79902b41ec8a04b2966024cc72_vgbaq_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/visual_art_postcard-239673563182552105</guid><pubDate>Thu, 07 May 2009 00:57:58 GMT</pubDate><title><![CDATA[Visual Art Postcard]]></title><link>http://www.zazzle.com/visual_art_postcard-239673563182552105</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget6" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/visual_art_postcard-239673563182552105" id="page_zWidget6-imageLink" class="dX-realviewLink">
				<img id="page_zWidget6-preview" src="http://rlv.zcache.com/visual_art_postcard-ref362548a3ba4563b6cb8e56a1a9a4a4_vgbaq_8byvr_152.jpg" alt="Visual Art Postcard" title="Visual Art Postcard" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget6-info">
		
		
		<div class="">
			
				<span class="gbb-price">$0.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/visual_art_postcard-239673563182552105" id="page_zWidget6-title" class="gbb-productTitle" title="Visual Art Postcard">Visual Art Postcard</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget6-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$0.95</price><media:title><![CDATA[Visual Art Postcard]]></media:title><media:description><![CDATA[Design by James Intrilligator]]></media:description><media:price>$0.95</media:price><media:thumbnail url="http://rlv.zcache.com/visual_art_postcard-ref362548a3ba4563b6cb8e56a1a9a4a4_vgbaq_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/visual_art_postcard-ref362548a3ba4563b6cb8e56a1a9a4a4_vgbaq_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/dynamic_luminance_and_motion_postcard-239999026352761187</guid><pubDate>Thu, 07 May 2009 00:46:09 GMT</pubDate><title><![CDATA[Dynamic Luminance and Motion Postcard]]></title><link>http://www.zazzle.com/dynamic_luminance_and_motion_postcard-239999026352761187</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget7" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/dynamic_luminance_and_motion_postcard-239999026352761187" id="page_zWidget7-imageLink" class="dX-realviewLink">
				<img id="page_zWidget7-preview" src="http://rlv.zcache.com/dynamic_luminance_and_motion_postcard-rb7c147f89553406bb3bd7d16bdb4987b_vgbaq_8byvr_152.jpg" alt="Dynamic Luminance and Motion Postcard" title="Dynamic Luminance and Motion Postcard" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget7-info">
		
		
		<div class="">
			
				<span class="gbb-price">$0.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/dynamic_luminance_and_motion_postcard-239999026352761187" id="page_zWidget7-title" class="gbb-productTitle" title="Dynamic Luminance and Motion Postcard">Dynamic Luminance and Motion Postcard</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget7-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$0.95</price><media:title><![CDATA[Dynamic Luminance and Motion Postcard]]></media:title><media:description><![CDATA[Design by Alan Stubbs and Simone Gori]]></media:description><media:price>$0.95</media:price><media:thumbnail url="http://rlv.zcache.com/dynamic_luminance_and_motion_postcard-rb7c147f89553406bb3bd7d16bdb4987b_vgbaq_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/dynamic_luminance_and_motion_postcard-rb7c147f89553406bb3bd7d16bdb4987b_vgbaq_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/dynamic_luminance_gradient_postcard-239449051384946424</guid><pubDate>Thu, 07 May 2009 00:40:48 GMT</pubDate><title><![CDATA[Dynamic Luminance-Gradient Postcard]]></title><link>http://www.zazzle.com/dynamic_luminance_gradient_postcard-239449051384946424</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget8" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/dynamic_luminance_gradient_postcard-239449051384946424" id="page_zWidget8-imageLink" class="dX-realviewLink">
				<img id="page_zWidget8-preview" src="http://rlv.zcache.com/dynamic_luminance_gradient_postcard-r28c3dfff1ca74da3ad7f4fb02e1c2371_vgbaq_8byvr_152.jpg" alt="Dynamic Luminance-Gradient Postcard" title="Dynamic Luminance-Gradient Postcard" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget8-info">
		
		
		<div class="">
			
				<span class="gbb-price">$0.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/dynamic_luminance_gradient_postcard-239449051384946424" id="page_zWidget8-title" class="gbb-productTitle" title="Dynamic Luminance-Gradient Postcard">Dynamic Luminance-Gradient Postcard</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget8-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$0.95</price><media:title><![CDATA[Dynamic Luminance-Gradient Postcard]]></media:title><media:description><![CDATA[Move forward toward the center of the figure. An interesting change in apparent brightness and to some degree form will result—what may be called a “here comes the sun” effect. By moving back and forth, this apparent change will repeat.]]></media:description><media:price>$0.95</media:price><media:thumbnail url="http://rlv.zcache.com/dynamic_luminance_gradient_postcard-r28c3dfff1ca74da3ad7f4fb02e1c2371_vgbaq_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/dynamic_luminance_gradient_postcard-r28c3dfff1ca74da3ad7f4fb02e1c2371_vgbaq_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/mona_lisa_t_shirt-235667653892226330</guid><pubDate>Thu, 07 May 2009 00:20:29 GMT</pubDate><title><![CDATA[Mona Lisa T-shirt]]></title><link>http://www.zazzle.com/mona_lisa_t_shirt-235667653892226330</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget9" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/mona_lisa_t_shirt-235667653892226330" id="page_zWidget9-imageLink" class="dX-realviewLink">
				<img id="page_zWidget9-preview" src="http://rlv.zcache.com/mona_lisa_t_shirt-r4f977b7fb48f4ba2b48a69df9a56cc2e_804gn_152.jpg" alt="Mona Lisa T-shirt" title="Mona Lisa T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget9-info">
		
		
		<div class="">
			
				<span class="gbb-price">$24.90</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/mona_lisa_t_shirt-235667653892226330" id="page_zWidget9-title" class="gbb-productTitle" title="Mona Lisa T-shirt">Mona Lisa T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget9-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$24.90</price><media:title><![CDATA[Mona Lisa T-shirt]]></media:title><media:description><![CDATA[The separate processing of color and form information has a parallel in artists&#39; idea that color and luminance play very different roles in art . The elusive quality of the Mona Lisa&#39;s smile can be explained by the fact that her smile is almost entirely in low spatial frequencies, and so is seen best by your peripheral vision. These three images show her face filtered to show selectively lowest (left) low (middle) and high (right) spatial frequencies. So when you look at her eyes or the background, you see a smile like the one on the left, or in the middle, and you think she is smiling. But when you look directly at her mouth, it looks more like the panel on the right, and her smile seems to vanish. The fact that the degree of her smile varies so much with gaze angle makes her expression dynamic, and the fact that her smile vanishes when you look directly at it, makes it seem elusive.]]></media:description><media:price>$24.90</media:price><media:thumbnail url="http://rlv.zcache.com/mona_lisa_t_shirt-r4f977b7fb48f4ba2b48a69df9a56cc2e_804gn_152.jpg" /><media:content url="http://rlv.zcache.com/mona_lisa_t_shirt-r4f977b7fb48f4ba2b48a69df9a56cc2e_804gn_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/alternating_brightness_star_coffee_mug-168911854219331083</guid><pubDate>Wed, 06 May 2009 23:20:49 GMT</pubDate><title><![CDATA[Alternating Brightness Star Coffee Mug]]></title><link>http://www.zazzle.com/alternating_brightness_star_coffee_mug-168911854219331083</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget10" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/alternating_brightness_star_coffee_mug-168911854219331083" id="page_zWidget10-imageLink" class="dX-realviewLink">
				<img id="page_zWidget10-preview" src="http://rlv.zcache.com/alternating_brightness_star_coffee_mug-r5edfa08218f54e2a8ddb700f078c10ad_x7jgr_8byvr_152.jpg" alt="Alternating Brightness Star Coffee Mug" title="Alternating Brightness Star Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget10-info">
		
		
		<div class="">
			
				<span class="gbb-price">$14.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/alternating_brightness_star_coffee_mug-168911854219331083" id="page_zWidget10-title" class="gbb-productTitle" title="Alternating Brightness Star Coffee Mug">Alternating Brightness Star Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget10-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$14.95</price><media:title><![CDATA[Alternating Brightness Star Coffee Mug]]></media:title><media:description><![CDATA[The Alternating Brightness Star (ABS) illusion is made of concentric stars of graded luminance. The physical luminance of each individual star remains constant at all points; however the corners of the stars are perceptually more salient than the straight edges, forming illusory folds that irradiate from the very center of the set of stars. In the default example, the innermost star is white, the outermost star is black, and the gradient from the center to the outside star has 20 luminance steps. The illusory folds that radiate from the center of the set of stars appear light or dark depending on the polarity of the corner angle and on the direction of the luminance gradient (black-to-white or white-to-black). In the default example, the illusory folds leading to the tips of the star appear bright, whereas the illusory folds leading to the valleys in between the tips of the star appear dark. However, all illusory folds (dark or bright) are physically identical to each other in luminance. We call this effect Corner Angle Brightness Reversal. Design by <a>Susana Martinez-Conde</a>]]></media:description><media:price>$14.95</media:price><media:thumbnail url="http://rlv.zcache.com/alternating_brightness_star_coffee_mug-r5edfa08218f54e2a8ddb700f078c10ad_x7jgr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/alternating_brightness_star_coffee_mug-r5edfa08218f54e2a8ddb700f078c10ad_x7jgr_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/maxwell_vs_hering_postcard_mouse_mat-144436471544926924</guid><pubDate>Wed, 06 May 2009 22:54:21 GMT</pubDate><title><![CDATA[Maxwell vs Hering Postcard Mouse Mat]]></title><link>http://www.zazzle.com/maxwell_vs_hering_postcard_mouse_mat-144436471544926924</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget11" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/maxwell_vs_hering_postcard_mouse_mat-144436471544926924" id="page_zWidget11-imageLink" class="dX-realviewLink">
				<img id="page_zWidget11-preview" src="http://rlv.zcache.com/maxwell_vs_hering_postcard_mouse_mat-r5663c3051f864179918d9d799cf72286_x74vi_8byvr_152.jpg" alt="Maxwell vs Hering Postcard Mouse Mat" title="Maxwell vs Hering Postcard Mouse Mat" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget11-info">
		
		
		<div class="">
			
				<span class="gbb-price">$10.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/maxwell_vs_hering_postcard_mouse_mat-144436471544926924" id="page_zWidget11-title" class="gbb-productTitle" title="Maxwell vs Hering Postcard Mouse Mat">Maxwell vs Hering Postcard Mouse Mat</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget11-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$10.95</price><media:title><![CDATA[Maxwell vs Hering Postcard]]></media:title><media:description><![CDATA[Design by Michael Pickard]]></media:description><media:price>$10.95</media:price><media:thumbnail url="http://rlv.zcache.com/maxwell_vs_hering_postcard_mouse_mat-r5663c3051f864179918d9d799cf72286_x74vi_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/maxwell_vs_hering_postcard_mouse_mat-r5663c3051f864179918d9d799cf72286_x74vi_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/maxwell_vs_hering_postcard-239673370434164164</guid><pubDate>Wed, 06 May 2009 22:39:21 GMT</pubDate><title><![CDATA[Maxwell vs Hering postcard]]></title><link>http://www.zazzle.com/maxwell_vs_hering_postcard-239673370434164164</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget12" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/maxwell_vs_hering_postcard-239673370434164164" id="page_zWidget12-imageLink" class="dX-realviewLink">
				<img id="page_zWidget12-preview" src="http://rlv.zcache.com/maxwell_vs_hering_postcard-ra48181b5e983447b9b8d5bcf27e59b11_vgbaq_8byvr_152.jpg" alt="Maxwell vs Hering postcard" title="Maxwell vs Hering postcard" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget12-info">
		
		
		<div class="">
			
				<span class="gbb-price">$0.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/maxwell_vs_hering_postcard-239673370434164164" id="page_zWidget12-title" class="gbb-productTitle" title="Maxwell vs Hering postcard">Maxwell vs Hering postcard</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget12-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$0.95</price><media:title><![CDATA[Maxwell vs Hering postcard]]></media:title><media:description><![CDATA[Design by Michael Pickard]]></media:description><media:price>$0.95</media:price><media:thumbnail url="http://rlv.zcache.com/maxwell_vs_hering_postcard-ra48181b5e983447b9b8d5bcf27e59b11_vgbaq_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/maxwell_vs_hering_postcard-ra48181b5e983447b9b8d5bcf27e59b11_vgbaq_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/bulge_out_contours_mousepad-144958037295414381</guid><pubDate>Wed, 06 May 2009 22:20:27 GMT</pubDate><title><![CDATA[Bulge Out Contours Mousepad]]></title><link>http://www.zazzle.com/bulge_out_contours_mousepad-144958037295414381</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget13" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/bulge_out_contours_mousepad-144958037295414381" id="page_zWidget13-imageLink" class="dX-realviewLink">
				<img id="page_zWidget13-preview" src="http://rlv.zcache.com/bulge_out_contours_mousepad-rc46791d020db4bce87359b64a04e8a34_x74vi_8byvr_152.jpg" alt="Bulge Out Contours Mousepad" title="Bulge Out Contours Mousepad" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget13-info">
		
		
		<div class="">
			
				<span class="gbb-price">$10.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/bulge_out_contours_mousepad-144958037295414381" id="page_zWidget13-title" class="gbb-productTitle" title="Bulge Out Contours Mousepad">Bulge Out Contours Mousepad</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget13-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$10.95</price><media:title><![CDATA[Bulge Out Contours Mousepad]]></media:title><media:description><![CDATA[he squares&#39; contours appear to bulge out.
We experience the illusion because the visual system relies on local
luminance contrast to code local tilts and positions. The squares sides
perceptually continues along the curved contours that have the same contrast
sign.]]></media:description><media:price>$10.95</media:price><media:thumbnail url="http://rlv.zcache.com/bulge_out_contours_mousepad-rc46791d020db4bce87359b64a04e8a34_x74vi_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/bulge_out_contours_mousepad-rc46791d020db4bce87359b64a04e8a34_x74vi_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/bulge_out_contours_postcard-239845659692538325</guid><pubDate>Wed, 06 May 2009 22:18:16 GMT</pubDate><title><![CDATA[Bulge Out Contours Postcard]]></title><link>http://www.zazzle.com/bulge_out_contours_postcard-239845659692538325</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget14" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/bulge_out_contours_postcard-239845659692538325" id="page_zWidget14-imageLink" class="dX-realviewLink">
				<img id="page_zWidget14-preview" src="http://rlv.zcache.com/bulge_out_contours_postcard-rb73f4e9881674406b983d17dc1c1149a_vgbaq_8byvr_152.jpg" alt="Bulge Out Contours Postcard" title="Bulge Out Contours Postcard" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget14-info">
		
		
		<div class="">
			
				<span class="gbb-price">$0.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/bulge_out_contours_postcard-239845659692538325" id="page_zWidget14-title" class="gbb-productTitle" title="Bulge Out Contours Postcard">Bulge Out Contours Postcard</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget14-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$0.95</price><media:title><![CDATA[Bulge Out Contours Postcard]]></media:title><media:description><![CDATA[The squares&#39; contours appear to bulge out.
We experience the illusion because the visual system relies on local
luminance contrast to code local tilts and positions. The squares sides
perceptually continues along the curved contours that have the same contrast
sign.]]></media:description><media:price>$0.95</media:price><media:thumbnail url="http://rlv.zcache.com/bulge_out_contours_postcard-rb73f4e9881674406b983d17dc1c1149a_vgbaq_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/bulge_out_contours_postcard-rb73f4e9881674406b983d17dc1c1149a_vgbaq_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/four_squares_postcard-239321040211613921</guid><pubDate>Wed, 06 May 2009 22:07:00 GMT</pubDate><title><![CDATA[Four Squares Postcard]]></title><link>http://www.zazzle.com/four_squares_postcard-239321040211613921</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget15" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/four_squares_postcard-239321040211613921" id="page_zWidget15-imageLink" class="dX-realviewLink">
				<img id="page_zWidget15-preview" src="http://rlv.zcache.com/four_squares_postcard-r4ea17edc3bc04d458685d0c8b4823964_vgbaq_8byvr_152.jpg" alt="Four Squares Postcard" title="Four Squares Postcard" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget15-info">
		
		
		<div class="">
			
				<span class="gbb-price">$0.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/four_squares_postcard-239321040211613921" id="page_zWidget15-title" class="gbb-productTitle" title="Four Squares Postcard">Four Squares Postcard</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget15-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$0.95</price><media:title><![CDATA[Four Squares Postcard]]></media:title><media:description><![CDATA[The patterns in the four squares are stationary, yet they appear to move.]]></media:description><media:price>$0.95</media:price><media:thumbnail url="http://rlv.zcache.com/four_squares_postcard-r4ea17edc3bc04d458685d0c8b4823964_vgbaq_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/four_squares_postcard-r4ea17edc3bc04d458685d0c8b4823964_vgbaq_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/tilt_illusion_t_shirt-235017680920211091</guid><pubDate>Wed, 06 May 2009 17:32:45 GMT</pubDate><title><![CDATA[Tilt-Illusion T-shirt]]></title><link>http://www.zazzle.com/tilt_illusion_t_shirt-235017680920211091</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget16" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/tilt_illusion_t_shirt-235017680920211091" id="page_zWidget16-imageLink" class="dX-realviewLink">
				<img id="page_zWidget16-preview" src="http://rlv.zcache.com/tilt_illusion_t_shirt-rb8d9ee6f8864446792aabc24b5826149_804gs_152.jpg" alt="Tilt-Illusion T-shirt" title="Tilt-Illusion T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget16-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/tilt_illusion_t_shirt-235017680920211091" id="page_zWidget16-title" class="gbb-productTitle" title="Tilt-Illusion T-shirt">Tilt-Illusion T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget16-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[Tilt-Illusion T-shirt]]></media:title><media:description><![CDATA[Design by <a href="http://www.awargi.org" rel="nofollow">Siddharth Jain</a>]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/tilt_illusion_t_shirt-rb8d9ee6f8864446792aabc24b5826149_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/tilt_illusion_t_shirt-rb8d9ee6f8864446792aabc24b5826149_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/vision_art_t_shirt-235687436744681346</guid><pubDate>Wed, 06 May 2009 17:31:32 GMT</pubDate><title><![CDATA[Vision Art T-shirt]]></title><link>http://www.zazzle.com/vision_art_t_shirt-235687436744681346</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget17" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/vision_art_t_shirt-235687436744681346" id="page_zWidget17-imageLink" class="dX-realviewLink">
				<img id="page_zWidget17-preview" src="http://rlv.zcache.com/vision_art_t_shirt-r05f20eab3e744563b1bd1c0783f19865_804gs_152.jpg" alt="Vision Art T-shirt" title="Vision Art T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget17-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.40</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/vision_art_t_shirt-235687436744681346" id="page_zWidget17-title" class="gbb-productTitle" title="Vision Art T-shirt">Vision Art T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget17-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.40</price><media:title><![CDATA[Vision Art T-shirt]]></media:title><media:description><![CDATA[Design by James Intrilligator]]></media:description><media:price>$23.40</media:price><media:thumbnail url="http://rlv.zcache.com/vision_art_t_shirt-r05f20eab3e744563b1bd1c0783f19865_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/vision_art_t_shirt-r05f20eab3e744563b1bd1c0783f19865_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual, illustrations]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/vision_art_t_shirt-235546096140967911</guid><pubDate>Wed, 06 May 2009 17:28:11 GMT</pubDate><title><![CDATA[Vision Art T-shirt]]></title><link>http://www.zazzle.com/vision_art_t_shirt-235546096140967911</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget18" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/vision_art_t_shirt-235546096140967911" id="page_zWidget18-imageLink" class="dX-realviewLink">
				<img id="page_zWidget18-preview" src="http://rlv.zcache.com/vision_art_t_shirt-r0d25bd0971e74e5895e7818f5ab57262_804g5_152.jpg" alt="Vision Art T-shirt" title="Vision Art T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget18-info">
		
		
		<div class="">
			
				<span class="gbb-price">$24.85</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/vision_art_t_shirt-235546096140967911" id="page_zWidget18-title" class="gbb-productTitle" title="Vision Art T-shirt">Vision Art T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget18-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$24.85</price><media:title><![CDATA[Vision Art T-shirt]]></media:title><media:description><![CDATA[Design by James Intrilligator]]></media:description><media:price>$24.85</media:price><media:thumbnail url="http://rlv.zcache.com/vision_art_t_shirt-r0d25bd0971e74e5895e7818f5ab57262_804g5_152.jpg" /><media:content url="http://rlv.zcache.com/vision_art_t_shirt-r0d25bd0971e74e5895e7818f5ab57262_804g5_500.jpg" /><media:keywords><![CDATA[illsuion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/stereo_vision_illusory_contours_t_shirt-235174612655872736</guid><pubDate>Wed, 06 May 2009 17:26:41 GMT</pubDate><title><![CDATA[Stereo Vision Illusory Contours T-shirt]]></title><link>http://www.zazzle.com/stereo_vision_illusory_contours_t_shirt-235174612655872736</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget19" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/stereo_vision_illusory_contours_t_shirt-235174612655872736" id="page_zWidget19-imageLink" class="dX-realviewLink">
				<img id="page_zWidget19-preview" src="http://rlv.zcache.com/stereo_vision_illusory_contours_t_shirt-r27b70d8daa94438a9951ca6bb2298aef_804gs_152.jpg" alt="Stereo Vision Illusory Contours T-shirt" title="Stereo Vision Illusory Contours T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget19-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/stereo_vision_illusory_contours_t_shirt-235174612655872736" id="page_zWidget19-title" class="gbb-productTitle" title="Stereo Vision Illusory Contours T-shirt">Stereo Vision Illusory Contours T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget19-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[Stereo Vision Illusory Contours T-shirt]]></media:title><media:description><![CDATA[Davi Geiger and Hiroshi Ishikawa]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/stereo_vision_illusory_contours_t_shirt-r27b70d8daa94438a9951ca6bb2298aef_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/stereo_vision_illusory_contours_t_shirt-r27b70d8daa94438a9951ca6bb2298aef_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/plain_in_garden_t_shirt-235319933110255075</guid><pubDate>Wed, 06 May 2009 17:24:20 GMT</pubDate><title><![CDATA[Plain in Garden T-shirt]]></title><link>http://www.zazzle.com/plain_in_garden_t_shirt-235319933110255075</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget20" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/plain_in_garden_t_shirt-235319933110255075" id="page_zWidget20-imageLink" class="dX-realviewLink">
				<img id="page_zWidget20-preview" src="http://rlv.zcache.com/plain_in_garden_t_shirt-re354b3f34c984414a38698f059b5469b_804gs_152.jpg" alt="Plain in Garden T-shirt" title="Plain in Garden T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget20-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/plain_in_garden_t_shirt-235319933110255075" id="page_zWidget20-title" class="gbb-productTitle" title="Plain in Garden T-shirt">Plain in Garden T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget20-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[Plain in Garden T-shirt]]></media:title><media:description><![CDATA[Design by Max D&#252;rsteler]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/plain_in_garden_t_shirt-re354b3f34c984414a38698f059b5469b_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/plain_in_garden_t_shirt-re354b3f34c984414a38698f059b5469b_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/four_discs_t_shirt-235148913774972934</guid><pubDate>Wed, 06 May 2009 17:21:39 GMT</pubDate><title><![CDATA[Four Discs T-shirt]]></title><link>http://www.zazzle.com/four_discs_t_shirt-235148913774972934</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget21" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/four_discs_t_shirt-235148913774972934" id="page_zWidget21-imageLink" class="dX-realviewLink">
				<img id="page_zWidget21-preview" src="http://rlv.zcache.com/four_discs_t_shirt-rc561aff61a8d46aeaa5ca968f2cede81_804gs_152.jpg" alt="Four Discs T-shirt" title="Four Discs T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget21-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/four_discs_t_shirt-235148913774972934" id="page_zWidget21-title" class="gbb-productTitle" title="Four Discs T-shirt">Four Discs T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget21-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[Four Discs T-shirt]]></media:title><media:description><![CDATA[Design by Haruaki Fukuda]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/four_discs_t_shirt-rc561aff61a8d46aeaa5ca968f2cede81_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/four_discs_t_shirt-rc561aff61a8d46aeaa5ca968f2cede81_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/bouncing_brains_t_shirt-235812586215121150</guid><pubDate>Wed, 06 May 2009 17:19:45 GMT</pubDate><title><![CDATA[Bouncing Brains T-shirt]]></title><link>http://www.zazzle.com/bouncing_brains_t_shirt-235812586215121150</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget22" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/bouncing_brains_t_shirt-235812586215121150" id="page_zWidget22-imageLink" class="dX-realviewLink">
				<img id="page_zWidget22-preview" src="http://rlv.zcache.com/bouncing_brains_t_shirt-r1e2f9dc2760c4c7890264e2eceace560_804gs_152.jpg" alt="Bouncing Brains T-shirt" title="Bouncing Brains T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget22-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.40</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/bouncing_brains_t_shirt-235812586215121150" id="page_zWidget22-title" class="gbb-productTitle" title="Bouncing Brains T-shirt">Bouncing Brains T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget22-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.40</price><media:title><![CDATA[Bouncing Brains T-shirt]]></media:title><media:description><![CDATA[Design by <a href="http://www.allpsych.uni-giessen.de/hansen/" rel="nofollow">Thorsten Hansen</a>,<a href="http://www.uni-giessen.de/cms/fbz/fb06/psychologie/abteilungen/allgemeine-psychologie-u-kognitionsforschung/team-2/kai-hamburger-seite" rel="nofollow"> Kai Hamburger</a>, and <a href="http://www.allpsych.uni-giessen.de/karl/" rel="nofollow">Karl R. Gegenfurtner</a>]]></media:description><media:price>$23.40</media:price><media:thumbnail url="http://rlv.zcache.com/bouncing_brains_t_shirt-r1e2f9dc2760c4c7890264e2eceace560_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/bouncing_brains_t_shirt-r1e2f9dc2760c4c7890264e2eceace560_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/adam_and_eve_coffee_mug-168234081858164373</guid><pubDate>Tue, 05 May 2009 23:24:19 GMT</pubDate><title><![CDATA[Adam and Eve Coffee Mug]]></title><link>http://www.zazzle.com/adam_and_eve_coffee_mug-168234081858164373</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget23" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/adam_and_eve_coffee_mug-168234081858164373" id="page_zWidget23-imageLink" class="dX-realviewLink">
				<img id="page_zWidget23-preview" src="http://rlv.zcache.com/adam_and_eve_coffee_mug-r6576f244ff334e7587f55213f83f6ce2_x7jpd_8byvr_152.jpg" alt="Adam and Eve Coffee Mug" title="Adam and Eve Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget23-info">
		
		
		<div class="">
			
				<span class="gbb-price">$16.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/adam_and_eve_coffee_mug-168234081858164373" id="page_zWidget23-title" class="gbb-productTitle" title="Adam and Eve Coffee Mug">Adam and Eve Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget23-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$16.95</price><media:title><![CDATA[Adam and Eve Coffee Mug]]></media:title><media:description><![CDATA[Design by Emily Holmes
Contributed by Thomas Papathomas]]></media:description><media:price>$16.95</media:price><media:thumbnail url="http://rlv.zcache.com/adam_and_eve_coffee_mug-r6576f244ff334e7587f55213f83f6ce2_x7jpd_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/adam_and_eve_coffee_mug-r6576f244ff334e7587f55213f83f6ce2_x7jpd_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/adam_and_eve_postcards-239079417835757388</guid><pubDate>Tue, 05 May 2009 23:15:36 GMT</pubDate><title><![CDATA[Adam and Eve Postcards]]></title><link>http://www.zazzle.com/adam_and_eve_postcards-239079417835757388</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget24" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/adam_and_eve_postcards-239079417835757388" id="page_zWidget24-imageLink" class="dX-realviewLink">
				<img id="page_zWidget24-preview" src="http://rlv.zcache.com/adam_and_eve_postcards-re61c4542de52438ab0a759df8d2af72b_vgbaq_8byvr_152.jpg" alt="Adam and Eve Postcards" title="Adam and Eve Postcards" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget24-info">
		
		
		<div class="">
			
				<span class="gbb-price">$0.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/adam_and_eve_postcards-239079417835757388" id="page_zWidget24-title" class="gbb-productTitle" title="Adam and Eve Postcards">Adam and Eve Postcards</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget24-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$0.95</price><media:title><![CDATA[Adam and Eve Postcards]]></media:title><media:description><![CDATA[Design by Emily Holmes <br /> Contributed by Thomas Papathomas]]></media:description><media:price>$0.95</media:price><media:thumbnail url="http://rlv.zcache.com/adam_and_eve_postcards-re61c4542de52438ab0a759df8d2af72b_vgbaq_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/adam_and_eve_postcards-re61c4542de52438ab0a759df8d2af72b_vgbaq_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/the_darwin_illusion_coffee_mug-168376637719592838</guid><pubDate>Tue, 05 May 2009 22:20:08 GMT</pubDate><title><![CDATA[The Darwin Illusion Coffee Mug]]></title><link>http://www.zazzle.com/the_darwin_illusion_coffee_mug-168376637719592838</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget25" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/the_darwin_illusion_coffee_mug-168376637719592838" id="page_zWidget25-imageLink" class="dX-realviewLink">
				<img id="page_zWidget25-preview" src="http://rlv.zcache.com/the_darwin_illusion_coffee_mug-rc516a0c6e1fe4ffbb1a9d2826d92058d_x7jgr_8byvr_152.jpg" alt="The Darwin Illusion Coffee Mug" title="The Darwin Illusion Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget25-info">
		
		
		<div class="">
			
				<span class="gbb-price">$14.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/the_darwin_illusion_coffee_mug-168376637719592838" id="page_zWidget25-title" class="gbb-productTitle" title="The Darwin Illusion Coffee Mug">The Darwin Illusion Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget25-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$14.95</price><media:title><![CDATA[The Darwin Illusion Coffee Mug]]></media:title><media:description><![CDATA[How to see the illusion The picture below shows two monkeys. Stare at the centre of the picture for about 30 seconds without moving your eyes. Next, look to the white surface on the mug. The monkeys should suddenly transform into a perfect picture of Darwin!]]></media:description><media:price>$14.95</media:price><media:thumbnail url="http://rlv.zcache.com/the_darwin_illusion_coffee_mug-rc516a0c6e1fe4ffbb1a9d2826d92058d_x7jgr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/the_darwin_illusion_coffee_mug-rc516a0c6e1fe4ffbb1a9d2826d92058d_x7jgr_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/leaning_tower_coffee_mug-168485679340748178</guid><pubDate>Tue, 05 May 2009 21:41:19 GMT</pubDate><title><![CDATA[Leaning Tower Coffee Mug]]></title><link>http://www.zazzle.com/leaning_tower_coffee_mug-168485679340748178</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget26" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/leaning_tower_coffee_mug-168485679340748178" id="page_zWidget26-imageLink" class="dX-realviewLink">
				<img id="page_zWidget26-preview" src="http://rlv.zcache.com/leaning_tower_coffee_mug-r892a6733d7cd4975ace5170340224ca5_x7jgr_8byvr_152.jpg" alt="Leaning Tower Coffee Mug" title="Leaning Tower Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget26-info">
		
		
		<div class="">
			
				<span class="gbb-price">$14.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/leaning_tower_coffee_mug-168485679340748178" id="page_zWidget26-title" class="gbb-productTitle" title="Leaning Tower Coffee Mug">Leaning Tower Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget26-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$14.95</price><media:title><![CDATA[Leaning Tower Coffee Mug]]></media:title><media:description><![CDATA[The two images of the Leaning Tower of Pisa are identical, yet one has the impression that the tower on the right leans more, as if photographed from a different angle. The reason for this is because the visual system treats the two images as if part of a singlescene. Normally, if two adjacent towers rise at the same angle, their image outlines converge as they recede from view due to perspective, and this is taken into account by the visual system. So when confronted with two towers whose corresponding outlines are parallel, the visual system assumes they must be diverging as they rise from view, and this is what we see. The illusion is not restricted to towers photographed from below, but works well with other scenes, such as railway tracks receding into the distance. What this illusion reveals is less to do with perspective, but how the visual system tends to treat two side-by-side images as if part of the same scene. However hard we try to think of the two photographs of the Leaning Tower as separate, albeit identical images of the same object, our visual system regards them as the ‘Twin Towers of Pisa’, whose perspective can only be interpreted in terms of one tower leaning more than the other.]]></media:description><media:price>$14.95</media:price><media:thumbnail url="http://rlv.zcache.com/leaning_tower_coffee_mug-r892a6733d7cd4975ace5170340224ca5_x7jgr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/leaning_tower_coffee_mug-r892a6733d7cd4975ace5170340224ca5_x7jgr_8byvr_500.jpg" /><media:keywords><![CDATA[visual, illusion]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/mona_lisa_visual_resolution_print-228416473447055240</guid><pubDate>Tue, 05 May 2009 21:22:45 GMT</pubDate><title><![CDATA[Mona Lisa Visual Resolution Print]]></title><link>http://www.zazzle.com/mona_lisa_visual_resolution_print-228416473447055240</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget27" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/mona_lisa_visual_resolution_print-228416473447055240" id="page_zWidget27-imageLink" class="dX-realviewLink">
				<img id="page_zWidget27-preview" src="http://rlv.zcache.com/mona_lisa_visual_resolution_print-r88513fe7a5754f6eb1b67f9caf1153cf_v0bc_8byvr_152.jpg" alt="Mona Lisa Visual Resolution Print" title="Mona Lisa Visual Resolution Print" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget27-info">
		
		
		<div class="">
			
				<span class="gbb-price">$11.90</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/mona_lisa_visual_resolution_print-228416473447055240" id="page_zWidget27-title" class="gbb-productTitle" title="Mona Lisa Visual Resolution Print">Mona Lisa Visual Resolution Print</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget27-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$11.90</price><media:title><![CDATA[Mona Lisa Visual Resolution]]></media:title><media:description><![CDATA[Design by Michael Pickard]]></media:description><media:price>$11.90</media:price><media:thumbnail url="http://rlv.zcache.com/mona_lisa_visual_resolution_print-r88513fe7a5754f6eb1b67f9caf1153cf_v0bc_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/mona_lisa_visual_resolution_print-r88513fe7a5754f6eb1b67f9caf1153cf_v0bc_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/mona_lisa_visual_resolution_t_shirt-235354140701111787</guid><pubDate>Tue, 05 May 2009 21:18:06 GMT</pubDate><title><![CDATA[Mona Lisa Visual Resolution T-shirt]]></title><link>http://www.zazzle.com/mona_lisa_visual_resolution_t_shirt-235354140701111787</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget28" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/mona_lisa_visual_resolution_t_shirt-235354140701111787" id="page_zWidget28-imageLink" class="dX-realviewLink">
				<img id="page_zWidget28-preview" src="http://rlv.zcache.com/mona_lisa_visual_resolution_t_shirt-r27c49770ce2641e699f6a186ffb39859_804gs_152.jpg" alt="Mona Lisa Visual Resolution T-shirt" title="Mona Lisa Visual Resolution T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget28-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/mona_lisa_visual_resolution_t_shirt-235354140701111787" id="page_zWidget28-title" class="gbb-productTitle" title="Mona Lisa Visual Resolution T-shirt">Mona Lisa Visual Resolution T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget28-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[Mona Lisa Visual Resolution T-shirt]]></media:title><media:description><![CDATA[Design by Michael Pickard]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/mona_lisa_visual_resolution_t_shirt-r27c49770ce2641e699f6a186ffb39859_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/mona_lisa_visual_resolution_t_shirt-r27c49770ce2641e699f6a186ffb39859_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/maxwell_vs_hering_coffee_mug-168884847255792709</guid><pubDate>Tue, 05 May 2009 21:07:15 GMT</pubDate><title><![CDATA[Maxwell vs Hering Coffee Mug]]></title><link>http://www.zazzle.com/maxwell_vs_hering_coffee_mug-168884847255792709</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget29" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/maxwell_vs_hering_coffee_mug-168884847255792709" id="page_zWidget29-imageLink" class="dX-realviewLink">
				<img id="page_zWidget29-preview" src="http://rlv.zcache.com/maxwell_vs_hering_coffee_mug-rc2f5469eae0749fe93152da9017146fb_x7jgr_8byvr_152.jpg" alt="Maxwell vs Hering Coffee Mug" title="Maxwell vs Hering Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget29-info">
		
		
		<div class="">
			
				<span class="gbb-price">$14.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/maxwell_vs_hering_coffee_mug-168884847255792709" id="page_zWidget29-title" class="gbb-productTitle" title="Maxwell vs Hering Coffee Mug">Maxwell vs Hering Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget29-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$14.95</price><media:title><![CDATA[Maxwell vs Hering Coffee Mug]]></media:title><media:description><![CDATA[Design by Michael Pickard]]></media:description><media:price>$14.95</media:price><media:thumbnail url="http://rlv.zcache.com/maxwell_vs_hering_coffee_mug-rc2f5469eae0749fe93152da9017146fb_x7jgr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/maxwell_vs_hering_coffee_mug-rc2f5469eae0749fe93152da9017146fb_x7jgr_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/maxwell_in_lines_of_force_t_shirt-235902859481911557</guid><pubDate>Tue, 05 May 2009 20:56:09 GMT</pubDate><title><![CDATA[Maxwell in Lines of Force T-shirt]]></title><link>http://www.zazzle.com/maxwell_in_lines_of_force_t_shirt-235902859481911557</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget30" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/maxwell_in_lines_of_force_t_shirt-235902859481911557" id="page_zWidget30-imageLink" class="dX-realviewLink">
				<img id="page_zWidget30-preview" src="http://rlv.zcache.com/maxwell_in_lines_of_force_t_shirt-r676704c45fd34dda847ba976fc09bda8_804gs_152.jpg" alt="Maxwell in Lines of Force T-shirt" title="Maxwell in Lines of Force T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget30-info">
		
		
		<div class="">
			
				<span class="gbb-price">$28.25</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/maxwell_in_lines_of_force_t_shirt-235902859481911557" id="page_zWidget30-title" class="gbb-productTitle" title="Maxwell in Lines of Force T-shirt">Maxwell in Lines of Force T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget30-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$28.25</price><media:title><![CDATA[Maxwell in Lines of Force T-shirt]]></media:title><media:description><![CDATA[Design by Michael Pickard]]></media:description><media:price>$28.25</media:price><media:thumbnail url="http://rlv.zcache.com/maxwell_in_lines_of_force_t_shirt-r676704c45fd34dda847ba976fc09bda8_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/maxwell_in_lines_of_force_t_shirt-r676704c45fd34dda847ba976fc09bda8_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/bulge_out_contours_coffee_mug-168253883270947485</guid><pubDate>Tue, 05 May 2009 19:51:43 GMT</pubDate><title><![CDATA[Bulge Out Contours Coffee Mug]]></title><link>http://www.zazzle.com/bulge_out_contours_coffee_mug-168253883270947485</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget31" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/bulge_out_contours_coffee_mug-168253883270947485" id="page_zWidget31-imageLink" class="dX-realviewLink">
				<img id="page_zWidget31-preview" src="http://rlv.zcache.com/bulge_out_contours_coffee_mug-r73eaa54bce5349dd954b008f52cad9a1_x7jgr_8byvr_152.jpg" alt="Bulge Out Contours Coffee Mug" title="Bulge Out Contours Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget31-info">
		
		
		<div class="">
			
				<span class="gbb-price">$14.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/bulge_out_contours_coffee_mug-168253883270947485" id="page_zWidget31-title" class="gbb-productTitle" title="Bulge Out Contours Coffee Mug">Bulge Out Contours Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget31-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$14.95</price><media:title><![CDATA[Bulge Out Contours Coffee Mug]]></media:title><media:description><![CDATA[The squares&#39; contours appear to bulge out.
We experience the illusion because the visual system relies on local
luminance contrast to code local tilts and positions. The squares sides
perceptually continues along the curved contours that have the same contrast
sign.]]></media:description><media:price>$14.95</media:price><media:thumbnail url="http://rlv.zcache.com/bulge_out_contours_coffee_mug-r73eaa54bce5349dd954b008f52cad9a1_x7jgr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/bulge_out_contours_coffee_mug-r73eaa54bce5349dd954b008f52cad9a1_x7jgr_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/bulge_out_contours_baby_doll_tshirt-235584604245712271</guid><pubDate>Tue, 05 May 2009 19:49:45 GMT</pubDate><title><![CDATA[Bulge Out Contours Baby Doll Tshirt]]></title><link>http://www.zazzle.com/bulge_out_contours_baby_doll_tshirt-235584604245712271</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget32" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/bulge_out_contours_baby_doll_tshirt-235584604245712271" id="page_zWidget32-imageLink" class="dX-realviewLink">
				<img id="page_zWidget32-preview" src="http://rlv.zcache.com/bulge_out_contours_baby_doll_tshirt-r9b3795bccacb4f7d9393c96e97320ba6_8nhmi_152.jpg" alt="Bulge Out Contours Baby Doll Tshirt" title="Bulge Out Contours Baby Doll Tshirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget32-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.40</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/bulge_out_contours_baby_doll_tshirt-235584604245712271" id="page_zWidget32-title" class="gbb-productTitle" title="Bulge Out Contours Baby Doll Tshirt">Bulge Out Contours Baby Doll Tshirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget32-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.40</price><media:title><![CDATA[Bulge Out Contours Baby Doll]]></media:title><media:description><![CDATA[The squares&#39; contours appear to bulge out.
We experience the illusion because the visual system relies on local
luminance contrast to code local tilts and positions. The squares sides
perceptually continues along the curved contours that have the same contrast
sign.]]></media:description><media:price>$23.40</media:price><media:thumbnail url="http://rlv.zcache.com/bulge_out_contours_baby_doll_tshirt-r9b3795bccacb4f7d9393c96e97320ba6_8nhmi_152.jpg" /><media:content url="http://rlv.zcache.com/bulge_out_contours_baby_doll_tshirt-r9b3795bccacb4f7d9393c96e97320ba6_8nhmi_500.jpg" /><media:keywords><![CDATA[visual, illusion]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/bulge_out_contours_t_shirt-235552307412646736</guid><pubDate>Tue, 05 May 2009 19:47:25 GMT</pubDate><title><![CDATA[Bulge-out Contours T-shirt]]></title><link>http://www.zazzle.com/bulge_out_contours_t_shirt-235552307412646736</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget33" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/bulge_out_contours_t_shirt-235552307412646736" id="page_zWidget33-imageLink" class="dX-realviewLink">
				<img id="page_zWidget33-preview" src="http://rlv.zcache.com/bulge_out_contours_t_shirt-r4945affd299e4db49ea45cb6ea3acb36_804gd_152.jpg" alt="Bulge-out Contours T-shirt" title="Bulge-out Contours T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget33-info">
		
		
		<div class="">
			
				<span class="gbb-price">$24.90</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/bulge_out_contours_t_shirt-235552307412646736" id="page_zWidget33-title" class="gbb-productTitle" title="Bulge-out Contours T-shirt">Bulge-out Contours T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget33-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$24.90</price><media:title><![CDATA[Bulge-out Contours T-shirt]]></media:title><media:description><![CDATA[The squares&#39; contours appear to bulge out.
We experience the illusion because the visual system relies on local
luminance contrast to code local tilts and positions. The squares sides
perceptually continues along the curved contours that have the same contrast
sign.]]></media:description><media:price>$24.90</media:price><media:thumbnail url="http://rlv.zcache.com/bulge_out_contours_t_shirt-r4945affd299e4db49ea45cb6ea3acb36_804gd_152.jpg" /><media:content url="http://rlv.zcache.com/bulge_out_contours_t_shirt-r4945affd299e4db49ea45cb6ea3acb36_804gd_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/illusory_motion_and_rings_t_shirt-235019509078535213</guid><pubDate>Tue, 05 May 2009 18:26:39 GMT</pubDate><title><![CDATA[Illusory Motion and Rings T-shirt]]></title><link>http://www.zazzle.com/illusory_motion_and_rings_t_shirt-235019509078535213</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget34" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/illusory_motion_and_rings_t_shirt-235019509078535213" id="page_zWidget34-imageLink" class="dX-realviewLink">
				<img id="page_zWidget34-preview" src="http://rlv.zcache.com/illusory_motion_and_rings_t_shirt-r6cd69981a80148c4b5db4c2ac9f47916_804g5_152.jpg" alt="Illusory Motion and Rings T-shirt" title="Illusory Motion and Rings T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget34-info">
		
		
		<div class="">
			
				<span class="gbb-price">$24.85</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/illusory_motion_and_rings_t_shirt-235019509078535213" id="page_zWidget34-title" class="gbb-productTitle" title="Illusory Motion and Rings T-shirt">Illusory Motion and Rings T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget34-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$24.85</price><media:title><![CDATA[Illusory Motion and Rings T-shirt]]></media:title><media:description><![CDATA[Design by Johannes Zanker]]></media:description><media:price>$24.85</media:price><media:thumbnail url="http://rlv.zcache.com/illusory_motion_and_rings_t_shirt-r6cd69981a80148c4b5db4c2ac9f47916_804g5_152.jpg" /><media:content url="http://rlv.zcache.com/illusory_motion_and_rings_t_shirt-r6cd69981a80148c4b5db4c2ac9f47916_804g5_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/revolving_wheels_ladies_t_shirt-235139508384822777</guid><pubDate>Tue, 05 May 2009 17:50:07 GMT</pubDate><title><![CDATA[Revolving Wheels Ladies T-shirt]]></title><link>http://www.zazzle.com/revolving_wheels_ladies_t_shirt-235139508384822777</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget35" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/revolving_wheels_ladies_t_shirt-235139508384822777" id="page_zWidget35-imageLink" class="dX-realviewLink">
				<img id="page_zWidget35-preview" src="http://rlv.zcache.com/revolving_wheels_ladies_t_shirt-r37e0463da8fd42aeae44819eb2b21f8f_8naoo_152.jpg" alt="Revolving Wheels Ladies T-shirt" title="Revolving Wheels Ladies T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget35-info">
		
		
		<div class="">
			
				<span class="gbb-price">$31.70</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/revolving_wheels_ladies_t_shirt-235139508384822777" id="page_zWidget35-title" class="gbb-productTitle" title="Revolving Wheels Ladies T-shirt">Revolving Wheels Ladies T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget35-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$31.70</price><media:title><![CDATA[Revolving Wheels Ladies T-shirt]]></media:title><media:description><![CDATA[Design by Baingio Pinna]]></media:description><media:price>$31.70</media:price><media:thumbnail url="http://rlv.zcache.com/revolving_wheels_ladies_t_shirt-r37e0463da8fd42aeae44819eb2b21f8f_8naoo_152.jpg" /><media:content url="http://rlv.zcache.com/revolving_wheels_ladies_t_shirt-r37e0463da8fd42aeae44819eb2b21f8f_8naoo_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/revolving_wheels_t_shirt-235409179293527443</guid><pubDate>Tue, 05 May 2009 17:45:33 GMT</pubDate><title><![CDATA[Revolving Wheels T-shirt]]></title><link>http://www.zazzle.com/revolving_wheels_t_shirt-235409179293527443</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget36" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/revolving_wheels_t_shirt-235409179293527443" id="page_zWidget36-imageLink" class="dX-realviewLink">
				<img id="page_zWidget36-preview" src="http://rlv.zcache.com/revolving_wheels_t_shirt-r19f306d581654925afe99ea5b413a730_va6lr_152.jpg" alt="Revolving Wheels T-shirt" title="Revolving Wheels T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget36-info">
		
		
		<div class="">
			
				<span class="gbb-price">$26.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/revolving_wheels_t_shirt-235409179293527443" id="page_zWidget36-title" class="gbb-productTitle" title="Revolving Wheels T-shirt">Revolving Wheels T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget36-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$26.95</price><media:title><![CDATA[Revolving Wheels T-shirt]]></media:title><media:description><![CDATA[Design by Baingio Pinna]]></media:description><media:price>$26.95</media:price><media:thumbnail url="http://rlv.zcache.com/revolving_wheels_t_shirt-r19f306d581654925afe99ea5b413a730_va6lr_152.jpg" /><media:content url="http://rlv.zcache.com/revolving_wheels_t_shirt-r19f306d581654925afe99ea5b413a730_va6lr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/converging_diverging_baby_doll_shirts-235662476084091014</guid><pubDate>Tue, 05 May 2009 16:56:00 GMT</pubDate><title><![CDATA[Converging Diverging Baby Doll Shirts]]></title><link>http://www.zazzle.com/converging_diverging_baby_doll_shirts-235662476084091014</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget37" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/converging_diverging_baby_doll_shirts-235662476084091014" id="page_zWidget37-imageLink" class="dX-realviewLink">
				<img id="page_zWidget37-preview" src="http://rlv.zcache.com/converging_diverging_baby_doll_shirts-r455d8854037746a98b0a3283b4a49445_8natd_152.jpg" alt="Converging Diverging Baby Doll Shirts" title="Converging Diverging Baby Doll Shirts" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget37-info">
		
		
		<div class="">
			
				<span class="gbb-price">$24.70</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/converging_diverging_baby_doll_shirts-235662476084091014" id="page_zWidget37-title" class="gbb-productTitle" title="Converging Diverging Baby Doll Shirts">Converging Diverging Baby Doll Shirts</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget37-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$24.70</price><media:title><![CDATA[Converging Diverging Baby Doll]]></media:title><media:description><![CDATA[Design by Baingio Pinna]]></media:description><media:price>$24.70</media:price><media:thumbnail url="http://rlv.zcache.com/converging_diverging_baby_doll_shirts-r455d8854037746a98b0a3283b4a49445_8natd_152.jpg" /><media:content url="http://rlv.zcache.com/converging_diverging_baby_doll_shirts-r455d8854037746a98b0a3283b4a49445_8natd_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/converging_diverging_t_shirt-235188789121364402</guid><pubDate>Tue, 05 May 2009 16:50:45 GMT</pubDate><title><![CDATA[Converging Diverging T-Shirt]]></title><link>http://www.zazzle.com/converging_diverging_t_shirt-235188789121364402</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget38" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/converging_diverging_t_shirt-235188789121364402" id="page_zWidget38-imageLink" class="dX-realviewLink">
				<img id="page_zWidget38-preview" src="http://rlv.zcache.com/converging_diverging_t_shirt-rb63769c35aec417783c706caaa21a8eb_va6pw_152.jpg" alt="Converging Diverging T-Shirt" title="Converging Diverging T-Shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget38-info">
		
		
		<div class="">
			
				<span class="gbb-price">$26.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/converging_diverging_t_shirt-235188789121364402" id="page_zWidget38-title" class="gbb-productTitle" title="Converging Diverging T-Shirt">Converging Diverging T-Shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget38-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$26.95</price><media:title><![CDATA[Converging Diverging T-Shirt]]></media:title><media:description><![CDATA[Design by Baingio Pinna]]></media:description><media:price>$26.95</media:price><media:thumbnail url="http://rlv.zcache.com/converging_diverging_t_shirt-rb63769c35aec417783c706caaa21a8eb_va6pw_152.jpg" /><media:content url="http://rlv.zcache.com/converging_diverging_t_shirt-rb63769c35aec417783c706caaa21a8eb_va6pw_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/illusion_contest_coffee_mug-168413238655863321</guid><pubDate>Tue, 05 May 2009 01:05:08 GMT</pubDate><title><![CDATA[Illusion Contest Coffee Mug]]></title><link>http://www.zazzle.com/illusion_contest_coffee_mug-168413238655863321</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget39" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/illusion_contest_coffee_mug-168413238655863321" id="page_zWidget39-imageLink" class="dX-realviewLink">
				<img id="page_zWidget39-preview" src="http://rlv.zcache.com/illusion_contest_coffee_mug-re26760ab8ae14cedb4b2b1b0ba45f786_x7jp5_8byvr_152.jpg" alt="Illusion Contest Coffee Mug" title="Illusion Contest Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget39-info">
		
		
		<div class="">
			
				<span class="gbb-price">$16.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/illusion_contest_coffee_mug-168413238655863321" id="page_zWidget39-title" class="gbb-productTitle" title="Illusion Contest Coffee Mug">Illusion Contest Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget39-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$16.95</price><media:title><![CDATA[Illusion Contest Coffee Mug]]></media:title><media:description><![CDATA[The contest is a celebration of the ingenuity and creativity of the world’s premier visual illusion research community. Visual illusions are those perceptual experiences that do not match the physical reality. Our perception of the outside world is generated indirectly by brain mechanisms, and so all visual perception is illusory to some extent. The study of visual illusions is therefore of critical importance to the understanding of the basic mechanisms of sensory perception, as well as to cure many diseases of the visual system. The visual illusion community includes visual scientists, ophthalmologists, neurologists, and visual artists that use a variety of methods to help discover the neural underpinnings of visual illusory perception.]]></media:description><media:price>$16.95</media:price><media:thumbnail url="http://rlv.zcache.com/illusion_contest_coffee_mug-re26760ab8ae14cedb4b2b1b0ba45f786_x7jp5_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/illusion_contest_coffee_mug-re26760ab8ae14cedb4b2b1b0ba45f786_x7jp5_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/world_s_largest_lightness_illusion_coffee_mug-168610533205203790</guid><pubDate>Tue, 05 May 2009 01:03:28 GMT</pubDate><title><![CDATA[World’s Largest Lightness Illusion Coffee Mug]]></title><link>http://www.zazzle.com/world_s_largest_lightness_illusion_coffee_mug-168610533205203790</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget40" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/world_s_largest_lightness_illusion_coffee_mug-168610533205203790" id="page_zWidget40-imageLink" class="dX-realviewLink">
				<img id="page_zWidget40-preview" src="http://rlv.zcache.com/world_s_largest_lightness_illusion_coffee_mug-r36e8b50f9ef545a2a9109e7e4bc7feec_x7jgr_8byvr_152.jpg" alt="World’s Largest Lightness Illusion Coffee Mug" title="World’s Largest Lightness Illusion Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget40-info">
		
		
		<div class="">
			
				<span class="gbb-price">$14.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/world_s_largest_lightness_illusion_coffee_mug-168610533205203790" id="page_zWidget40-title" class="gbb-productTitle" title="World’s Largest Lightness Illusion Coffee Mug">World’s Largest Lightness Illusion Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget40-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$14.95</price><media:title><![CDATA[World’s Largest Lightness Illusion Coffee Mug]]></media:title><media:description><![CDATA[In this illusion, it appears that there is one set of black figures and one set of white figures. In fact, the two sets of figures are exactly identical. They appear different because the surrounding regions they are on cause the visual system to segment the images into layers. Thus one set appears to be white figures behind dark clouds, and the other set appears to be dark figures behind light clouds. The figures are actually identical!]]></media:description><media:price>$14.95</media:price><media:thumbnail url="http://rlv.zcache.com/world_s_largest_lightness_illusion_coffee_mug-r36e8b50f9ef545a2a9109e7e4bc7feec_x7jgr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/world_s_largest_lightness_illusion_coffee_mug-r36e8b50f9ef545a2a9109e7e4bc7feec_x7jgr_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/world_s_largest_lightness_illusion_t_shirt-235240561177991656</guid><pubDate>Tue, 05 May 2009 00:54:56 GMT</pubDate><title><![CDATA[World’s Largest Lightness Illusion T-shirt]]></title><link>http://www.zazzle.com/world_s_largest_lightness_illusion_t_shirt-235240561177991656</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget41" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/world_s_largest_lightness_illusion_t_shirt-235240561177991656" id="page_zWidget41-imageLink" class="dX-realviewLink">
				<img id="page_zWidget41-preview" src="http://rlv.zcache.com/world_s_largest_lightness_illusion_t_shirt-r4de658c0bd0b44a39df13189d0a99657_va6lr_152.jpg" alt="World’s Largest Lightness Illusion T-shirt" title="World’s Largest Lightness Illusion T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget41-info">
		
		
		<div class="">
			
				<span class="gbb-price">$26.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/world_s_largest_lightness_illusion_t_shirt-235240561177991656" id="page_zWidget41-title" class="gbb-productTitle" title="World’s Largest Lightness Illusion T-shirt">World’s Largest Lightness Illusion T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget41-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$26.95</price><media:title><![CDATA[World’s Largest Lightness Illusion T-shirt]]></media:title><media:description><![CDATA[In this illusion, it appears that there is one set of black figures and one set of white figures. In fact, the two sets of figures are exactly identical. They appear different because the surrounding regions they are on cause the visual system to segment the images into layers. Thus one set appears to be white figures behind dark clouds, and the other set appears to be dark figures behind light clouds. The figures are actually identical!]]></media:description><media:price>$26.95</media:price><media:thumbnail url="http://rlv.zcache.com/world_s_largest_lightness_illusion_t_shirt-r4de658c0bd0b44a39df13189d0a99657_va6lr_152.jpg" /><media:content url="http://rlv.zcache.com/world_s_largest_lightness_illusion_t_shirt-r4de658c0bd0b44a39df13189d0a99657_va6lr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/alternating_brightness_star_3_4_sleeve_t_shirt-235405182614324819</guid><pubDate>Tue, 05 May 2009 00:39:00 GMT</pubDate><title><![CDATA[Alternating Brightness Star 3/4 Sleeve T Shirt]]></title><link>http://www.zazzle.com/alternating_brightness_star_3_4_sleeve_t_shirt-235405182614324819</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget42" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/alternating_brightness_star_3_4_sleeve_t_shirt-235405182614324819" id="page_zWidget42-imageLink" class="dX-realviewLink">
				<img id="page_zWidget42-preview" src="http://rlv.zcache.com/alternating_brightness_star_3_4_sleeve_t_shirt-r2b7bc7a52fb74ba697a934a60065ae91_f03mf_152.jpg" alt="Alternating Brightness Star 3/4 Sleeve T Shirt" title="Alternating Brightness Star 3/4 Sleeve T Shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget42-info">
		
		
		<div class="">
			
				<span class="gbb-price">$24.40</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/alternating_brightness_star_3_4_sleeve_t_shirt-235405182614324819" id="page_zWidget42-title" class="gbb-productTitle" title="Alternating Brightness Star 3/4 Sleeve T Shirt">Alternating Brightness Star 3/4 Sleeve T Shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget42-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$24.40</price><media:title><![CDATA[Alternating Brightness Star 3/4 Sleeve]]></media:title><media:description><![CDATA[The Alternating Brightness Star (ABS) illusion is made of concentric stars of graded luminance. The physical luminance of each individual star remains constant at all points; however the corners of the stars are perceptually more salient than the straight edges, forming illusory folds that irradiate from the very center of the set of stars. In the default example, the innermost star is white, the outermost star is black, and the gradient from the center to the outside star has 20 luminance steps. The illusory folds that radiate from the center of the set of stars appear light or dark depending on the polarity of the corner angle and on the direction of the luminance gradient (black-to-white or white-to-black). In the default example, the illusory folds leading to the tips of the star appear bright, whereas the illusory folds leading to the valleys in between the tips of the star appear dark. However, all illusory folds (dark or bright) are physically identical to each other in luminance. We call this effect Corner Angle Brightness Reversal. Design by <a href="http://smc.neuralcorrelate.com" rel="nofollow">Susana Martinez-Conde</a>]]></media:description><media:price>$24.40</media:price><media:thumbnail url="http://rlv.zcache.com/alternating_brightness_star_3_4_sleeve_t_shirt-r2b7bc7a52fb74ba697a934a60065ae91_f03mf_152.jpg" /><media:content url="http://rlv.zcache.com/alternating_brightness_star_3_4_sleeve_t_shirt-r2b7bc7a52fb74ba697a934a60065ae91_f03mf_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/alternating_brightness_star_ladies_ringer_t_shirts-235624013020435897</guid><pubDate>Tue, 05 May 2009 00:20:50 GMT</pubDate><title><![CDATA[Alternating Brightness Star Ladies Ringer T-shirts]]></title><link>http://www.zazzle.com/alternating_brightness_star_ladies_ringer_t_shirts-235624013020435897</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget43" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/alternating_brightness_star_ladies_ringer_t_shirts-235624013020435897" id="page_zWidget43-imageLink" class="dX-realviewLink">
				<img id="page_zWidget43-preview" src="http://rlv.zcache.com/alternating_brightness_star_ladies_ringer_t_shirts-rc90a004164eb429e96470cc11c451bba_vjfef_152.jpg" alt="Alternating Brightness Star Ladies Ringer T-shirts" title="Alternating Brightness Star Ladies Ringer T-shirts" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget43-info">
		
		
		<div class="">
			
				<span class="gbb-price">$31.25</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/alternating_brightness_star_ladies_ringer_t_shirts-235624013020435897" id="page_zWidget43-title" class="gbb-productTitle" title="Alternating Brightness Star Ladies Ringer T-shirts">Alternating Brightness Star Ladies Ringer T-shirts</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget43-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$31.25</price><media:title><![CDATA[Alternating Brightness Star Ladies Ringer]]></media:title><media:description><![CDATA[The Alternating Brightness Star (ABS) illusion is made of concentric stars of graded luminance. The physical luminance of each individual star remains constant at all points; however the corners of the stars are perceptually more salient than the straight edges, forming illusory folds that irradiate from the very center of the set of stars. In the default example, the innermost star is white, the outermost star is black, and the gradient from the center to the outside star has 20 luminance steps. The illusory folds that radiate from the center of the set of stars appear light or dark depending on the polarity of the corner angle and on the direction of the luminance gradient (black-to-white or white-to-black). In the default example, the illusory folds leading to the tips of the star appear bright, whereas the illusory folds leading to the valleys in between the tips of the star appear dark. However, all illusory folds (dark or bright) are physically identical to each other in luminance. We call this effect Corner Angle Brightness Reversal.]]></media:description><media:price>$31.25</media:price><media:thumbnail url="http://rlv.zcache.com/alternating_brightness_star_ladies_ringer_t_shirts-rc90a004164eb429e96470cc11c451bba_vjfef_152.jpg" /><media:content url="http://rlv.zcache.com/alternating_brightness_star_ladies_ringer_t_shirts-rc90a004164eb429e96470cc11c451bba_vjfef_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/dynamic_luminance_and_motion_coffee_mug-168697731022648557</guid><pubDate>Mon, 04 May 2009 23:25:57 GMT</pubDate><title><![CDATA[Dynamic Luminance and Motion Coffee Mug]]></title><link>http://www.zazzle.com/dynamic_luminance_and_motion_coffee_mug-168697731022648557</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget44" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/dynamic_luminance_and_motion_coffee_mug-168697731022648557" id="page_zWidget44-imageLink" class="dX-realviewLink">
				<img id="page_zWidget44-preview" src="http://rlv.zcache.com/dynamic_luminance_and_motion_coffee_mug-rafad4d79f98f4f8abe2b39c83525fdb1_x7jpr_8byvr_152.jpg" alt="Dynamic Luminance and Motion Coffee Mug" title="Dynamic Luminance and Motion Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget44-info">
		
		
		<div class="">
			
				<span class="gbb-price">$16.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/dynamic_luminance_and_motion_coffee_mug-168697731022648557" id="page_zWidget44-title" class="gbb-productTitle" title="Dynamic Luminance and Motion Coffee Mug">Dynamic Luminance and Motion Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget44-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$16.95</price><media:title><![CDATA[Dynamic Luminance and Motion Coffee Mug]]></media:title><media:description><![CDATA[Design by Alan Stubbs and Simone Gori]]></media:description><media:price>$16.95</media:price><media:thumbnail url="http://rlv.zcache.com/dynamic_luminance_and_motion_coffee_mug-rafad4d79f98f4f8abe2b39c83525fdb1_x7jpr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/dynamic_luminance_and_motion_coffee_mug-rafad4d79f98f4f8abe2b39c83525fdb1_x7jpr_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/dynamic_luminance_and_motion_ladies_t_shirt-235684337595503842</guid><pubDate>Mon, 04 May 2009 23:21:26 GMT</pubDate><title><![CDATA[Dynamic Luminance and Motion Ladies T-shirt]]></title><link>http://www.zazzle.com/dynamic_luminance_and_motion_ladies_t_shirt-235684337595503842</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget45" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/dynamic_luminance_and_motion_ladies_t_shirt-235684337595503842" id="page_zWidget45-imageLink" class="dX-realviewLink">
				<img id="page_zWidget45-preview" src="http://rlv.zcache.com/dynamic_luminance_and_motion_ladies_t_shirt-r0ff3bf16d9fd48d6a0697f82438a0cc0_8naem_152.jpg" alt="Dynamic Luminance and Motion Ladies T-shirt" title="Dynamic Luminance and Motion Ladies T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget45-info">
		
		
		<div class="">
			
				<span class="gbb-price">$30.10</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/dynamic_luminance_and_motion_ladies_t_shirt-235684337595503842" id="page_zWidget45-title" class="gbb-productTitle" title="Dynamic Luminance and Motion Ladies T-shirt">Dynamic Luminance and Motion Ladies T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget45-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$30.10</price><media:title><![CDATA[Dynamic Luminance and Motion Ladies T-shirt]]></media:title><media:description><![CDATA[Design by Alan Stubbs and Simone Gori]]></media:description><media:price>$30.10</media:price><media:thumbnail url="http://rlv.zcache.com/dynamic_luminance_and_motion_ladies_t_shirt-r0ff3bf16d9fd48d6a0697f82438a0cc0_8naem_152.jpg" /><media:content url="http://rlv.zcache.com/dynamic_luminance_and_motion_ladies_t_shirt-r0ff3bf16d9fd48d6a0697f82438a0cc0_8naem_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/the_filling_in_t_shirt-235840548689570092</guid><pubDate>Mon, 04 May 2009 22:55:05 GMT</pubDate><title><![CDATA[The Filling-in T-shirt]]></title><link>http://www.zazzle.com/the_filling_in_t_shirt-235840548689570092</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget46" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

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		<a href="http://www.zazzle.com/the_filling_in_t_shirt-235840548689570092" id="page_zWidget46-imageLink" class="dX-realviewLink">
				<img id="page_zWidget46-preview" src="http://rlv.zcache.com/the_filling_in_t_shirt-r3bef677018e84ea6abb50738f1adb908_804gs_152.jpg" alt="The Filling-in T-shirt" title="The Filling-in T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget46-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/the_filling_in_t_shirt-235840548689570092" id="page_zWidget46-title" class="gbb-productTitle" title="The Filling-in T-shirt">The Filling-in T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget46-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[The Filling-in T-shirt]]></media:title><media:description><![CDATA[To do:
Fixate your gaze on the center of one of the figures and stare at it for some time (20-30 seconds) while it cycles (without moving your eyes). After several iterations you’ll start noticing that the empty outlines fill in with ghostly redish or bluish colors! These illusory colors are called “afterimages”. Interestingly, the colors of the afterimages vary, which is puzzling because they come from the same original figure. Moreover, the shape of the outlines determines the filled-in color, which is complementary to the color of the same shape in the original figure.
What’s happening?]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/the_filling_in_t_shirt-r3bef677018e84ea6abb50738f1adb908_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/the_filling_in_t_shirt-r3bef677018e84ea6abb50738f1adb908_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/diamonds_baby_doll_t_shirts-235058985514311391</guid><pubDate>Mon, 04 May 2009 22:46:54 GMT</pubDate><title><![CDATA[Diamonds Baby Doll T-shirts]]></title><link>http://www.zazzle.com/diamonds_baby_doll_t_shirts-235058985514311391</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget47" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

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		<a href="http://www.zazzle.com/diamonds_baby_doll_t_shirts-235058985514311391" id="page_zWidget47-imageLink" class="dX-realviewLink">
				<img id="page_zWidget47-preview" src="http://rlv.zcache.com/diamonds_baby_doll_t_shirts-r2458c0e4c3a941e4b5ba1f0c1cdb98b7_8nhmi_152.jpg" alt="Diamonds Baby Doll T-shirts" title="Diamonds Baby Doll T-shirts" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget47-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.40</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/diamonds_baby_doll_t_shirts-235058985514311391" id="page_zWidget47-title" class="gbb-productTitle" title="Diamonds Baby Doll T-shirts">Diamonds Baby Doll T-shirts</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget47-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.40</price><media:title><![CDATA[Diamonds Baby Doll]]></media:title><media:description><![CDATA[Design by Patrick Cavanagh]]></media:description><media:price>$23.40</media:price><media:thumbnail url="http://rlv.zcache.com/diamonds_baby_doll_t_shirts-r2458c0e4c3a941e4b5ba1f0c1cdb98b7_8nhmi_152.jpg" /><media:content url="http://rlv.zcache.com/diamonds_baby_doll_t_shirts-r2458c0e4c3a941e4b5ba1f0c1cdb98b7_8nhmi_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/diamonds_t_shirt-235625869043000888</guid><pubDate>Mon, 04 May 2009 22:45:27 GMT</pubDate><title><![CDATA[Diamonds T-shirt]]></title><link>http://www.zazzle.com/diamonds_t_shirt-235625869043000888</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget48" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/diamonds_t_shirt-235625869043000888" id="page_zWidget48-imageLink" class="dX-realviewLink">
				<img id="page_zWidget48-preview" src="http://rlv.zcache.com/diamonds_t_shirt-r0fd3630bc5c4413591d838638e65d195_8041a_152.jpg" alt="Diamonds T-shirt" title="Diamonds T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget48-info">
		
		
		<div class="">
			
				<span class="gbb-price">$24.90</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/diamonds_t_shirt-235625869043000888" id="page_zWidget48-title" class="gbb-productTitle" title="Diamonds T-shirt">Diamonds T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget48-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$24.90</price><media:title><![CDATA[Diamonds T-shirt]]></media:title><media:description><![CDATA[Design by Patrick Cavanagh]]></media:description><media:price>$24.90</media:price><media:thumbnail url="http://rlv.zcache.com/diamonds_t_shirt-r0fd3630bc5c4413591d838638e65d195_8041a_152.jpg" /><media:content url="http://rlv.zcache.com/diamonds_t_shirt-r0fd3630bc5c4413591d838638e65d195_8041a_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/spirals_or_circles_ladies_t_shirt-235183683744050333</guid><pubDate>Mon, 04 May 2009 21:58:35 GMT</pubDate><title><![CDATA[Spirals or Circles Ladies T-shirt]]></title><link>http://www.zazzle.com/spirals_or_circles_ladies_t_shirt-235183683744050333</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget49" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/spirals_or_circles_ladies_t_shirt-235183683744050333" id="page_zWidget49-imageLink" class="dX-realviewLink">
				<img id="page_zWidget49-preview" src="http://rlv.zcache.com/spirals_or_circles_ladies_t_shirt-r9d1b62fb83474188a826ed42064d2ab6_8namf_152.jpg" alt="Spirals or Circles Ladies T-shirt" title="Spirals or Circles Ladies T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget49-info">
		
		
		<div class="">
			
				<span class="gbb-price">$31.60</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/spirals_or_circles_ladies_t_shirt-235183683744050333" id="page_zWidget49-title" class="gbb-productTitle" title="Spirals or Circles Ladies T-shirt">Spirals or Circles Ladies T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget49-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$31.60</price><media:title><![CDATA[Spirals or Circles Ladies T-shirt]]></media:title><media:description><![CDATA[Design by Baingio Pinna]]></media:description><media:price>$31.60</media:price><media:thumbnail url="http://rlv.zcache.com/spirals_or_circles_ladies_t_shirt-r9d1b62fb83474188a826ed42064d2ab6_8namf_152.jpg" /><media:content url="http://rlv.zcache.com/spirals_or_circles_ladies_t_shirt-r9d1b62fb83474188a826ed42064d2ab6_8namf_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/leaning_tower_t_shirt-235716993749126603</guid><pubDate>Mon, 04 May 2009 21:43:10 GMT</pubDate><title><![CDATA[Leaning Tower T-shirt]]></title><link>http://www.zazzle.com/leaning_tower_t_shirt-235716993749126603</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget50" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/leaning_tower_t_shirt-235716993749126603" id="page_zWidget50-imageLink" class="dX-realviewLink">
				<img id="page_zWidget50-preview" src="http://rlv.zcache.com/leaning_tower_t_shirt-r7e48341f714e4c90a2f25a48aed3ff3b_804gm_152.jpg" alt="Leaning Tower T-shirt" title="Leaning Tower T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget50-info">
		
		
		<div class="">
			
				<span class="gbb-price">$24.90</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/leaning_tower_t_shirt-235716993749126603" id="page_zWidget50-title" class="gbb-productTitle" title="Leaning Tower T-shirt">Leaning Tower T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget50-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$24.90</price><media:title><![CDATA[Leaning Tower T-shirt]]></media:title><media:description><![CDATA[The two images of the Leaning Tower of Pisa are identical, yet one has the impression that the tower on the right leans more, as if photographed from a different angle. The reason for this is because the visual system treats the two images as if part of a singlescene. Normally, if two adjacent towers rise at the same angle, their image outlines converge as they recede from view due to perspective, and this is taken into account by the visual system. So when confronted with two towers whose corresponding outlines are parallel, the visual system assumes they must be diverging as they rise from view, and this is what we see. The illusion is not restricted to towers photographed from below, but works well with other scenes, such as railway tracks receding into the distance. What this illusion reveals is less to do with perspective, but how the visual system tends to treat two side-by-side images as if part of the same scene. However hard we try to think of the two photographs of the Leaning Tower as separate, albeit identical images of the same object, our visual system regards them as the ‘Twin Towers of Pisa’, whose perspective can only be interpreted in terms of one tower leaning more than the other.]]></media:description><media:price>$24.90</media:price><media:thumbnail url="http://rlv.zcache.com/leaning_tower_t_shirt-r7e48341f714e4c90a2f25a48aed3ff3b_804gm_152.jpg" /><media:content url="http://rlv.zcache.com/leaning_tower_t_shirt-r7e48341f714e4c90a2f25a48aed3ff3b_804gm_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/spirals_or_circles_t_shirt-235215143394466921</guid><pubDate>Mon, 04 May 2009 20:53:49 GMT</pubDate><title><![CDATA[Spirals or Circles T-shirt]]></title><link>http://www.zazzle.com/spirals_or_circles_t_shirt-235215143394466921</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget51" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/spirals_or_circles_t_shirt-235215143394466921" id="page_zWidget51-imageLink" class="dX-realviewLink">
				<img id="page_zWidget51-preview" src="http://rlv.zcache.com/spirals_or_circles_t_shirt-rd6f691e25ba14817b1a0870c19f21284_va6l9_152.jpg" alt="Spirals or Circles T-shirt" title="Spirals or Circles T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget51-info">
		
		
		<div class="">
			
				<span class="gbb-price">$26.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/spirals_or_circles_t_shirt-235215143394466921" id="page_zWidget51-title" class="gbb-productTitle" title="Spirals or Circles T-shirt">Spirals or Circles T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget51-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$26.95</price><media:title><![CDATA[Spirals or Circles T-shirt]]></media:title><media:description><![CDATA[Design by Baingio Pinna]]></media:description><media:price>$26.95</media:price><media:thumbnail url="http://rlv.zcache.com/spirals_or_circles_t_shirt-rd6f691e25ba14817b1a0870c19f21284_va6l9_152.jpg" /><media:content url="http://rlv.zcache.com/spirals_or_circles_t_shirt-rd6f691e25ba14817b1a0870c19f21284_va6l9_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/mona_lisa_coffee_mug-168053945815264058</guid><pubDate>Mon, 04 May 2009 20:25:42 GMT</pubDate><title><![CDATA[Mona Lisa Coffee Mug]]></title><link>http://www.zazzle.com/mona_lisa_coffee_mug-168053945815264058</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget52" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/mona_lisa_coffee_mug-168053945815264058" id="page_zWidget52-imageLink" class="dX-realviewLink">
				<img id="page_zWidget52-preview" src="http://rlv.zcache.com/mona_lisa_coffee_mug-r22f6b6cde9f44deea28ede9b2c3eb0ff_x7jgr_8byvr_152.jpg" alt="Mona Lisa Coffee Mug" title="Mona Lisa Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget52-info">
		
		
		<div class="">
			
				<span class="gbb-price">$14.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/mona_lisa_coffee_mug-168053945815264058" id="page_zWidget52-title" class="gbb-productTitle" title="Mona Lisa Coffee Mug">Mona Lisa Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget52-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$14.95</price><media:title><![CDATA[Mona Lisa Coffee Mug]]></media:title><media:description><![CDATA[The separate processing of color and form information has a parallel in artists&#39; idea that color and luminance play very different roles in art . The elusive quality of the Mona Lisa&#39;s smile can be explained by the fact that her smile is almost entirely in low spatial frequencies, and so is seen best by your peripheral vision. These three images show her face filtered to show selectively lowest (left) low (middle) and high (right) spatial frequencies. So when you look at her eyes or the background, you see a smile like the one on the left, or in the middle, and you think she is smiling. But when you look directly at her mouth, it looks more like the panel on the right, and her smile seems to vanish. The fact that the degree of her smile varies so much with gaze angle makes her expression dynamic, and the fact that her smile vanishes when you look directly at it, makes it seem elusive.]]></media:description><media:price>$14.95</media:price><media:thumbnail url="http://rlv.zcache.com/mona_lisa_coffee_mug-r22f6b6cde9f44deea28ede9b2c3eb0ff_x7jgr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/mona_lisa_coffee_mug-r22f6b6cde9f44deea28ede9b2c3eb0ff_x7jgr_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual, fine art]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/dynamic_luminance_gradient_ladies_t_shirt-235399174571207153</guid><pubDate>Mon, 04 May 2009 18:49:09 GMT</pubDate><title><![CDATA[Dynamic Luminance-Gradient Ladies T-shirt]]></title><link>http://www.zazzle.com/dynamic_luminance_gradient_ladies_t_shirt-235399174571207153</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget53" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/dynamic_luminance_gradient_ladies_t_shirt-235399174571207153" id="page_zWidget53-imageLink" class="dX-realviewLink">
				<img id="page_zWidget53-preview" src="http://rlv.zcache.com/dynamic_luminance_gradient_ladies_t_shirt-r2f48219d211a4ca7805a70b67b2b43a7_8nh9t_152.jpg" alt="Dynamic Luminance-Gradient Ladies T-shirt" title="Dynamic Luminance-Gradient Ladies T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget53-info">
		
		
		<div class="">
			
				<span class="gbb-price">$30.05</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/dynamic_luminance_gradient_ladies_t_shirt-235399174571207153" id="page_zWidget53-title" class="gbb-productTitle" title="Dynamic Luminance-Gradient Ladies T-shirt">Dynamic Luminance-Gradient Ladies T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget53-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$30.05</price><media:title><![CDATA[Dynamic Luminance-Gradient Ladies T-shirt]]></media:title><media:description><![CDATA[Move forward toward the center of the figure. An interesting change in apparent brightness and to some degree form will result—what may be called a “here comes the sun” effect. By moving back and forth, this apparent change will repeat.]]></media:description><media:price>$30.05</media:price><media:thumbnail url="http://rlv.zcache.com/dynamic_luminance_gradient_ladies_t_shirt-r2f48219d211a4ca7805a70b67b2b43a7_8nh9t_152.jpg" /><media:content url="http://rlv.zcache.com/dynamic_luminance_gradient_ladies_t_shirt-r2f48219d211a4ca7805a70b67b2b43a7_8nh9t_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/dynamic_luminance_gradient_t_shirt-235586562771505263</guid><pubDate>Mon, 04 May 2009 18:43:32 GMT</pubDate><title><![CDATA[Dynamic Luminance-Gradient T-shirt]]></title><link>http://www.zazzle.com/dynamic_luminance_gradient_t_shirt-235586562771505263</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget54" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/dynamic_luminance_gradient_t_shirt-235586562771505263" id="page_zWidget54-imageLink" class="dX-realviewLink">
				<img id="page_zWidget54-preview" src="http://rlv.zcache.com/dynamic_luminance_gradient_t_shirt-ra2210d1f6ec64f4f973085e1b4a04c75_va6l9_152.jpg" alt="Dynamic Luminance-Gradient T-shirt" title="Dynamic Luminance-Gradient T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget54-info">
		
		
		<div class="">
			
				<span class="gbb-price">$26.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/dynamic_luminance_gradient_t_shirt-235586562771505263" id="page_zWidget54-title" class="gbb-productTitle" title="Dynamic Luminance-Gradient T-shirt">Dynamic Luminance-Gradient T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget54-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$26.95</price><media:title><![CDATA[Dynamic Luminance-Gradient T-shirt]]></media:title><media:description><![CDATA[Move forward toward the center of the figure. An interesting change in apparent brightness and to some degree form will result—what may be called a “here comes the sun” effect. By moving back and forth, this apparent change will repeat.]]></media:description><media:price>$26.95</media:price><media:thumbnail url="http://rlv.zcache.com/dynamic_luminance_gradient_t_shirt-ra2210d1f6ec64f4f973085e1b4a04c75_va6l9_152.jpg" /><media:content url="http://rlv.zcache.com/dynamic_luminance_gradient_t_shirt-ra2210d1f6ec64f4f973085e1b4a04c75_va6l9_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/ghostly_gaze_i_m_with_stupid_t_shirt-235909965873818275</guid><pubDate>Mon, 04 May 2009 18:12:36 GMT</pubDate><title><![CDATA[Ghostly Gaze I&#39; m with Stupid T-shirt]]></title><link>http://www.zazzle.com/ghostly_gaze_i_m_with_stupid_t_shirt-235909965873818275</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget55" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/ghostly_gaze_i_m_with_stupid_t_shirt-235909965873818275" id="page_zWidget55-imageLink" class="dX-realviewLink">
				<img id="page_zWidget55-preview" src="http://rlv.zcache.com/ghostly_gaze_i_m_with_stupid_t_shirt-ra7b698611f2b45baaca2dc69ef45c37c_804gs_152.jpg" alt="Ghostly Gaze I&#39; m with Stupid T-shirt" title="Ghostly Gaze I&#39; m with Stupid T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget55-info">
		
		
		<div class="">
			
				<span class="gbb-price">$23.30</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/ghostly_gaze_i_m_with_stupid_t_shirt-235909965873818275" id="page_zWidget55-title" class="gbb-productTitle" title="Ghostly Gaze I&amp;#39; m with Stupid T-shirt">Ghostly Gaze I&#39; m with Stupid T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget55-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$23.30</price><media:title><![CDATA[Ghostly Gaze I' m with Stupid T-shirt]]></media:title><media:description><![CDATA[Design by Rob Jenkins]]></media:description><media:price>$23.30</media:price><media:thumbnail url="http://rlv.zcache.com/ghostly_gaze_i_m_with_stupid_t_shirt-ra7b698611f2b45baaca2dc69ef45c37c_804gs_152.jpg" /><media:content url="http://rlv.zcache.com/ghostly_gaze_i_m_with_stupid_t_shirt-ra7b698611f2b45baaca2dc69ef45c37c_804gs_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/margaret_thatcher_t_shirt-235592745644829708</guid><pubDate>Mon, 04 May 2009 17:47:38 GMT</pubDate><title><![CDATA[Margaret Thatcher T-shirt]]></title><link>http://www.zazzle.com/margaret_thatcher_t_shirt-235592745644829708</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget56" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/margaret_thatcher_t_shirt-235592745644829708" id="page_zWidget56-imageLink" class="dX-realviewLink">
				<img id="page_zWidget56-preview" src="http://rlv.zcache.com/margaret_thatcher_t_shirt-r4f662133deb74b9f9e458ac71385e45a_va6l9_152.jpg" alt="Margaret Thatcher T-shirt" title="Margaret Thatcher T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget56-info">
		
		
		<div class="">
			
				<span class="gbb-price">$26.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/margaret_thatcher_t_shirt-235592745644829708" id="page_zWidget56-title" class="gbb-productTitle" title="Margaret Thatcher T-shirt">Margaret Thatcher T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget56-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$26.95</price><media:title><![CDATA[Margaret Thatcher T-shirt]]></media:title><media:description><![CDATA[Design by Peter Thompson]]></media:description><media:price>$26.95</media:price><media:thumbnail url="http://rlv.zcache.com/margaret_thatcher_t_shirt-r4f662133deb74b9f9e458ac71385e45a_va6l9_152.jpg" /><media:content url="http://rlv.zcache.com/margaret_thatcher_t_shirt-r4f662133deb74b9f9e458ac71385e45a_va6l9_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/margaret_thatcher_coffee_mug-168035193272428567</guid><pubDate>Mon, 04 May 2009 17:40:41 GMT</pubDate><title><![CDATA[Margaret Thatcher Coffee Mug]]></title><link>http://www.zazzle.com/margaret_thatcher_coffee_mug-168035193272428567</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget57" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

	<div  class="dX-realview gbb-realview clearfix">
		
		<a href="http://www.zazzle.com/margaret_thatcher_coffee_mug-168035193272428567" id="page_zWidget57-imageLink" class="dX-realviewLink">
				<img id="page_zWidget57-preview" src="http://rlv.zcache.com/margaret_thatcher_coffee_mug-r6a70b908f11f4d37a03fcb8072edd2c0_x7jgr_8byvr_152.jpg" alt="Margaret Thatcher Coffee Mug" title="Margaret Thatcher Coffee Mug" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget57-info">
		
		
		<div class="">
			
				<span class="gbb-price">$14.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/margaret_thatcher_coffee_mug-168035193272428567" id="page_zWidget57-title" class="gbb-productTitle" title="Margaret Thatcher Coffee Mug">Margaret Thatcher Coffee Mug</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget57-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$14.95</price><media:title><![CDATA[Margaret Thatcher Coffee Mug]]></media:title><media:description><![CDATA[Design by Peter Thompson]]></media:description><media:price>$14.95</media:price><media:thumbnail url="http://rlv.zcache.com/margaret_thatcher_coffee_mug-r6a70b908f11f4d37a03fcb8072edd2c0_x7jgr_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/margaret_thatcher_coffee_mug-r6a70b908f11f4d37a03fcb8072edd2c0_x7jgr_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/kastoria_poster-228468440305171108</guid><pubDate>Mon, 04 May 2009 17:28:21 GMT</pubDate><title><![CDATA[Kastoria Poster]]></title><link>http://www.zazzle.com/kastoria_poster-228468440305171108</link><author>illusioncontest</author><description><![CDATA[



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	<div class="dX-info clearfix" id="page_zWidget58-info">
		
		
		<div class="">
			
				<span class="gbb-price">$20.45</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/kastoria_poster-228468440305171108" id="page_zWidget58-title" class="gbb-productTitle" title="Kastoria Poster">Kastoria Poster</a>
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		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget58-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$20.45</price><media:title><![CDATA[Kastoria Poster]]></media:title><media:description><![CDATA[Design by Thomas Papathomas]]></media:description><media:price>$20.45</media:price><media:thumbnail url="http://rlv.zcache.com/kastoria_poster-rafb6edfec2054021858ac6ee8a3562fa_2pd8_8byvr_152.jpg" /><media:content url="http://rlv.zcache.com/kastoria_poster-rafb6edfec2054021858ac6ee8a3562fa_2pd8_8byvr_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>

<item><guid isPermaLink="false">http://www.zazzle.com/kastoria_t_shirt-235178215097836877</guid><pubDate>Mon, 04 May 2009 17:24:12 GMT</pubDate><title><![CDATA[Kastoria T-shirt]]></title><link>http://www.zazzle.com/kastoria_t_shirt-235178215097836877</link><author>illusioncontest</author><description><![CDATA[



<div id="page_zWidget59" class="dX dX-Grid gbb-Grid dX-152 clearfix">

	

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		<a href="http://www.zazzle.com/kastoria_t_shirt-235178215097836877" id="page_zWidget59-imageLink" class="dX-realviewLink">
				<img id="page_zWidget59-preview" src="http://rlv.zcache.com/kastoria_t_shirt-r8b3b36b036a54c09a24c2bff7d62a6fb_va6pw_152.jpg" alt="Kastoria T-shirt" title="Kastoria T-shirt" class="dX-realviewImage" />
			</a>
		
	</div>

	
	<div class="dX-info clearfix" id="page_zWidget59-info">
		
		
		<div class="">
			
				<span class="gbb-price">$26.95</span>
				
					<span class=""> - </span>
				<a href="http://www.zazzle.com/kastoria_t_shirt-235178215097836877" id="page_zWidget59-title" class="gbb-productTitle" title="Kastoria T-shirt">Kastoria T-shirt</a>
		</div>
		<span class="gbb-byLine">by <a href="javascript://" id="page_zWidget59-storeLink">illusioncontest</a></span>
	</div>
	
</div>]]></description><price>$26.95</price><media:title><![CDATA[Kastoria T-shirt]]></media:title><media:description><![CDATA[Design by Thomas Papathomas]]></media:description><media:price>$26.95</media:price><media:thumbnail url="http://rlv.zcache.com/kastoria_t_shirt-r8b3b36b036a54c09a24c2bff7d62a6fb_va6pw_152.jpg" /><media:content url="http://rlv.zcache.com/kastoria_t_shirt-r8b3b36b036a54c09a24c2bff7d62a6fb_va6pw_500.jpg" /><media:keywords><![CDATA[illusion, visual]]></media:keywords><media:rating scheme="urn:mpaa">g</media:rating></item>
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