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	<title>Comments on: Idiot of the Day: This one&#8217;s not too swift</title>
	<atom:link href="http://www.mentalfloss.com/blogs/archives/1960/feed" rel="self" type="application/rss+xml" />
	<link>http://www.mentalfloss.com/blogs/archives/1960</link>
	<description>Feel Smart Again</description>
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		<title>By: Phil</title>
		<link>http://www.mentalfloss.com/blogs/archives/1960/comment-page-1#comment-2435</link>
		<dc:creator>Phil</dc:creator>
		<pubDate>Tue, 03 Oct 2006 17:26:11 +0000</pubDate>
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		<description>Hmm. Whoever authored that Wikipedia article was on the right track, only GPS satellites do not transmit &quot;light signals,&quot; rather it should read, &quot;radio signals that travel at the speed of light.&quot; 

Ham radio operators can also conduct EME communications (or Earth-Moon-Earth) communications for long distant contacts by aiming their antennas at -- you guessed it -- the moon and bouncing their radio signals off of it to achieve longer distance communication with other Earth stations beyond the radio horizon. And the occasional space ship.</description>
		<content:encoded><![CDATA[<p>Hmm. Whoever authored that Wikipedia article was on the right track, only GPS satellites do not transmit &#8220;light signals,&#8221; rather it should read, &#8220;radio signals that travel at the speed of light.&#8221; </p>
<p>Ham radio operators can also conduct EME communications (or Earth-Moon-Earth) communications for long distant contacts by aiming their antennas at &#8212; you guessed it &#8212; the moon and bouncing their radio signals off of it to achieve longer distance communication with other Earth stations beyond the radio horizon. And the occasional space ship.</p>
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		<title>By: Garon Whited</title>
		<link>http://www.mentalfloss.com/blogs/archives/1960/comment-page-1#comment-2312</link>
		<dc:creator>Garon Whited</dc:creator>
		<pubDate>Fri, 29 Sep 2006 13:07:38 +0000</pubDate>
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		<description>&quot;we were discussing the speed of light. When our instructor started talking about length dilation (how something’s length increases as it approaches the speed of light),&quot;

Actually, the length of an object appears to decrease, not increase.  The faster the object moves, the shorter it appears.  Relativistic speeds involve time dilation, mass gain, and length contraction.</description>
		<content:encoded><![CDATA[<p>&#8220;we were discussing the speed of light. When our instructor started talking about length dilation (how something’s length increases as it approaches the speed of light),&#8221;</p>
<p>Actually, the length of an object appears to decrease, not increase.  The faster the object moves, the shorter it appears.  Relativistic speeds involve time dilation, mass gain, and length contraction.</p>
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