http://randomcontemplation.vox.com/library/posts/page/1/ en Vox Sat, 19 Jan 2008 16:08:01 -0800 Copyright 2008 http://blogs.law.harvard.edu/tech/rss http://randomcontemplation.vox.com/library/post/illusion-and-reality.html?_c=feed-rss-full nobody@vox.com(Random_Contemplation) http://randomcontemplation.vox.com/library/post/illusion-and-reality.html?_c=feed-rss-full http://randomcontemplation.vox.com/library/post/illusion-and-reality.html?_c=feed-rss-full Sat, 19 Jan 2008 16:08:01 -0800 <p>Illusion?</p><p>I needed to type part of the title above in all caps. &#160; It seems that upper case &#39;I&#39; (matey) looks the same as lower case &#39;L&#39;.</p><p><img src="http://listverse.com/wp-content/uploads/2007/09/chubbillusion-tm.jpg" /></p><p>How do we know if what we believe we see as obvious truth, is true?&#160; The circle on the left and right above are the same.&#160; One seems clearer, more &#39;obvious&#39; based on the contrast.&#160; <a href="http://listverse.com/miscellaneous/20-amazing-optical-illusions/">Hmmm.</a></p><p><a href="http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html">Here</a> is more. </p><p><img src="http://web.mit.edu/persci/people/adelson/images/checkershadow/checkershadow_illusion4med.jpg" /></p><p>A and B above are the same color.<br /><a href="http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html">Here</a>. </p><p><br /><a href="http://web.mit.edu/persci/people/adelson/images/checkershadow/checkershadow_illusion4med.jpg%3E%20This%3C/A%3E%20is%20what%20I%20was%20looking%20for%20before%20I%20began%20this%20post:%3Cbr%3E%3Cbr%3E%3Cimg%20src=http://web.mit.edu/persci/people/adelson/images/checkershadow/checkershadow_illusion4med.jpg%3E%3Cbr%3E%3Cbr%3ESquares%20"></p></a> <p style="clear:both;"> <a href="http://randomcontemplation.vox.com/library/post/illusion-and-reality.html?_c=feed-rss-full#comments">Read and post comments</a> | <a href="http://www.vox.com/share/6a00e398ce92a6000300e398d41dc60005?_c=feed-rss-full">Send to a friend</a> </p> http://randomcontemplation.vox.com/library/post/avalanche-of-mustard-seeds.html?_c=feed-rss-full nobody@vox.com(Random_Contemplation) http://randomcontemplation.vox.com/library/post/avalanche-of-mustard-seeds.html?_c=feed-rss-full http://randomcontemplation.vox.com/library/post/avalanche-of-mustard-seeds.html?_c=feed-rss-full Thu, 03 Jan 2008 14:44:03 -0800 <p>Avalanche of mustard seeds</p><p><img src="http://jfi.uchicago.edu/%7Ejaeger/group/JaegerGroupImages/thumbnails/avalanche1.gif" /></p><p>Granular materials react to shear stresses differently than do ordinary fluids. Rather than deforming uniformly, materials such as dry sand or cohesionless powders develop shear bands: narrow zones containing large relative particle motion leaving adjacent regions essentially rigid. Since shear bands mark areas of flow, material failure and energy dissipation, they play a crucial role for many industrial, civil engineering and geophysical processes. <a href="http://jfi.uchicago.edu/%7Ejaeger/group/">(More).</a><br /></p> <p style="clear:both;"> <a href="http://randomcontemplation.vox.com/library/post/avalanche-of-mustard-seeds.html?_c=feed-rss-full#comments">Read and post comments</a> | <a href="http://www.vox.com/share/6a00e398ce92a6000300e398d1fd680002?_c=feed-rss-full">Send to a friend</a> </p> avalanche mustard seed