<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/9b78cf74-d75f-48fa-8168-0faad5b4c969/FDF7A1CC-2128-4BF7-B192-C39BA3F6F833/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://science.howstuffworks.com/relativity.htm" href="http://science.howstuffworks.com/relativity.htm" style="font-size: 11px;">science.howstuffworks.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://science.howstuffworks.com/relativity.htm"><SPAN class="articleTitle">How Special Relativity Works</SPAN></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://science.howstuffworks.com/relativity.htm"><DIV><IMG height="327" width="400" alt="einstein image" src="http://static.howstuffworks.com/gif/einstein-relativity.jpg" class="article" /><BR /><SPAN class="credit">Jon Levy/AFP/<A href="http://howstuffworks.com/framed.htm?parent=relativity.htm&url=http:///www.gettyimages.com">Getty Images</A></SPAN><BR /><SPAN class="caption">Pages from Albert Einstein's original manuscript in which he defines his theory of relativity.­</SPAN></DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://science.howstuffworks.com/relativity.htm"><DIV class="relatedVideoBox"> <DIV class="item"> <DIV class="title">Physics: Einstein's Equation and Fission</DIV> <CENTER> <DIV class="thumbnailBox"> <DIV class="thumbnail"><A href="http://videos.howstuffworks.com/hsw/11472-physics-einsteins-equation-and-fission-video.htm"><IMG border="0" title="Physics: Einstein's Equation and Fission" alt="Physics: Einstein's Equation and Fission" src="http://static.howstuffworks.com/gif/videos/120x90/11472.jpg" /></A></DIV> <DIV class="playButton"><A class="spritePlayVideoButton" href="http://videos.howstuffworks.com/hsw/11472-physics-einsteins-equation-and-fission-video.htm"><IMG border="0" title="Play Video" alt="Play Video" src="http://static.howstuffworks.com/en-us/default/buttons/bt_video_play.gif" /></A></DIV> </DIV> </CENTER> <UL class="plain"> <li style="margin-left:16px;padding-left: 0px;"><A href="http://videos.howstuffworks.com/science">More Science Videos »</A></LI> </UL> </DIV> </DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://science.howstuffworks.com/relativity.htm"><FONT face="arial,helvetica"> If you are a fan of science fiction, then you know that "relativity" is a fairly common part of the genre. 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