String Theory: A Beginner's Guide


	String Theory: A Beginner's Guide

aerynvala

4-15-2009 7:59 AM

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tags:

string theory, science, physics

aerynvala says:

For when you literally want to play the world's smallest violin for someone

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/22db101c-67f3-4a8f-9b7a-2c1e4077e890/ED55CA95-8F2C-4B6B-90FA-0582D0317261/" 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://www.newscientist.com/article/dn16950-string-theory-a-beginners-guide.html?DCMP=OTC-rss&nsref=online-news" href="http://www.newscientist.com/article/dn16950-string-theory-a-beginners-guide.html?DCMP=OTC-rss&nsref=online-news" style="font-size: 11px;">www.newscientist.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newscientist.com/article/dn16950-string-theory-a-beginners-guide.html?DCMP=OTC-rss&nsref=online-news"><P>String theory is one of the most famous ideas in modern physics, but it is also one of the most confusing.</P></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://www.newscientist.com/article/dn16950-string-theory-a-beginners-guide.html?DCMP=OTC-rss&nsref=online-news"><P>At its heart is the idea that the fundamental particles we observe are not point-like dots, but rather <A href="http://www.newscientist.com/article/mg16221905.200-strings-the-thing.html">tiny strings</A> that are so small that our best instruments cannot tell that they are not points.</P></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://www.newscientist.com/article/dn16950-string-theory-a-beginners-guide.html?DCMP=OTC-rss&nsref=online-news"><P>It also predicts that there are <A href="http://www.newscientist.com/article/dn3441-gravity-test-confines-string-theory-dimensions.html">extra dimensions to space</A> beyond the obvious length, breadth and depth, but we do not experience them because they are bunched up in tiny spaces.</P></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://www.newscientist.com/article/dn16950-string-theory-a-beginners-guide.html?DCMP=OTC-rss&nsref=online-news"><P>While these notions are deeply strange, the key issue for string theorists has actually been the <A href="http://www.newscientist.com/article/mg19225834.300-review-2006-string-theory-increasingly-knotty.html">difficulty of testing their ideas</A>.</P></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://www.newscientist.com/article/dn16950-string-theory-a-beginners-guide.html?DCMP=OTC-rss&nsref=online-news"><P>One of the most widely publicised aspects of string theory is its need for extra "tiny" dimensions of space. But these extra dimensions may not be necessary after all – at least, not if a 40-year-old idea called "twistor theory" has anything to do with it.</P></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://www.newscientist.com/article/dn16950-string-theory-a-beginners-guide.html?DCMP=OTC-rss&nsref=online-news">A neutrino experiment at the South Pole may be able to detect the predicted effects of string theory.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/ED55CA95-8F2C-4B6B-90FA-0582D0317261/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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