<rss version="0.91"><channel><title>What Supersonic Looks Like : RSS 0.91</title><link>http://www.plime.com/</link><description></description><language>en-us</language><item><title>What Supersonic Looks Like : RSS 0.91</title><link>http://www.plime.com/</link><description></description></item><item><title><![CDATA[What Supersonic Looks Like]]></title><link>http://www.plime.com/science/l/126334/1/</link><description><![CDATA[A widely circulated photograph shows an Air Force Raptor 22 jet breaking the fabled sound barrier while performing aerial maneuvers in the Gulf of Alaska.<br/><br/>    The phenomenon is not well studied. Scientists refer to it as a vapor cone, shock collar, or shock egg, and it's thought to be created by what's called a Prandtl-Glauert singularity.]]></description></item><hr size='1' class='line' noshade/><div style='padding-top:20px;height:300px;margin-right:10px;float:left;'><script type="text/javascript"><!--
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