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Message: <blockquote data-quote="gazaly" data-source="post: 5223090" data-attributes="member: 10197">Do you have "X-Ray Vision?"  You may be able to see through your own hand with this simple illusion.  Roll up a piece of notebook paper into a tube.  The diameter of the tube should be about 0.5 inch.  Hold up your left hand in front of you.  Hold the tube right next to the bottom of your left "pointer" finger in between you thumb (see figure below). Look through the tube with your RIGHT eye AND keep your left eye open too.  What you should see is a hole in your left hand!!  Why?  Because your brain is getting two different images...one of the hole in the paper and one of your left hand.<img src="http://faculty.washington.edu/chudler/gif/handt.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" />    <img src="http://faculty.washington.edu/chudler/gif/slcv.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

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