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    <title>Stjörnuskoðun - Svarthlutargeislun</title>
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      <title>Svarthlutargeislun</title>
      <link>http://www.stjornufraedi.is/alheimurinn/svarthlutargeislun/nr/152</link>
      <description>&lt;p&gt;Alheimurinn er fullur af &lt;a href=&quot;http://www.stjornuskodun.is/ljosid&quot; title=&quot;Ljósið&quot;&gt;ljósi&lt;/a&gt;, en hvaðan kemur það? Mestur hluti ljóssins verður til við ferli sem kallast svarthlutargeislun (e. &lt;em&gt;blackbody radiation&lt;/em&gt;). Í eðlisfræði er &lt;em&gt;svarthlutur&lt;/em&gt; fyrirbæri sem gleypir í sig alla rafsegulgeislun (allt ljós) sem á hann fellur.&lt;/p&gt;</description>
      
      <pubDate>Thu, 12 Aug 2010 14:06:00 +0000</pubDate>
      
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      <alt>svarthlutargeislun, kvika</alt>
      


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