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    <title>Best content in ΔΦΕ | Diigo - Groups</title>
    <link>https://groups.diigo.com/group/dfebookmarks</link>
    <description>Best content in ΔΦΕ | Diigo - Groups</description>
    <pubDate>Fri, 05 Sep 2014 12:27:42 -0000</pubDate>
    <lastBuildDate>Fri, 05 Sep 2014 12:27:42 -0000</lastBuildDate>
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      <title>Saferinternet.gr - Για ένα ασφαλέστερο Διαδίκτυο</title>
      <link>http://www.saferinternet.gr</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/%22%CE%BA%CE%BF%CE%B9%CE%BD%CF%89%CE%BD%CE%B9%CE%BA%CE%AC+%CE%B4%CE%AF%CE%BA%CF%84%CF%85%CE%B1%22&quot;&gt;κοινωνικά δίκτυα&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/security&quot;&gt;security&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/safety&quot;&gt;safety&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/law&quot;&gt;law&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Fri, 05 Sep 2014 12:27:42 -0000</pubDate>
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      <title>The Feynman Lectures on Physics</title>
      <link>http://www.feynmanlectures.caltech.edu</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;Oι φημισμένες διαλέξεις του R. Feynman - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/Feynman&quot;&gt;Feynman&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/lectures&quot;&gt;lectures&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/science&quot;&gt;science&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/education&quot;&gt;education&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/%CE%A6%CF%85%CF%83%CE%B9%CE%BA%CE%AE&quot;&gt;Φυσική&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Thu, 04 Sep 2014 12:36:17 -0000</pubDate>
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      <title>Chemical Curiosities: Surprising Science and Dramatic Demonstrations - YouTube</title>
      <link>https://www.youtube.com/watch?v=ti_E2ZKZpC4&amp;feature=youtu.be</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;Όμορφες πειράματα για τους μαθητές μας :-) - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/demonstrations&quot;&gt;demonstrations&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/science&quot;&gt;science&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/chemical&quot;&gt;chemical&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Thu, 24 Apr 2014 18:07:00 -0000</pubDate>
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      <title>Atomic Masses</title>
      <link>http://cnx.org/content/m42699/latest/</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;&quot;Atomic Masses&quot; - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/atomic&quot;&gt;atomic&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/mass&quot;&gt;mass&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/nuclear&quot;&gt;nuclear&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Tue, 04 Mar 2014 08:59:01 -0000</pubDate>
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      <title>The Feynman Lectures on Physics, Vol. III Table of Contents</title>
      <link>http://www.feynmanlectures.caltech.edu/III_toc.html</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;&quot;The Feynman Lectures on Physics, Volume III&quot; - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/Feynman&quot;&gt;Feynman&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/online&quot;&gt;online&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/lectures&quot;&gt;lectures&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 27 Jan 2014 12:15:21 -0000</pubDate>
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      <title>The Feynman Lectures on Physics, Vol. II Table of Contents</title>
      <link>http://www.feynmanlectures.info/docroot/II_toc.html</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;&quot;The Feynman Lectures on Physics, Volume II&quot; - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/Feynman&quot;&gt;Feynman&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/online&quot;&gt;online&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/lectures&quot;&gt;lectures&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 27 Jan 2014 12:14:45 -0000</pubDate>
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      <title>The Feynman Lectures on Physics Vol. I Table of Contents</title>
      <link>http://www.feynmanlectures.caltech.edu/I_toc.html</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/Feynman&quot;&gt;Feynman&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/lectures&quot;&gt;lectures&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/online&quot;&gt;online&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 27 Jan 2014 12:12:15 -0000</pubDate>
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      <title>20 Wonderful Online Museums and Sites for Virtual Field Trips to Use in Class</title>
      <link>http://www.educatorstechnology.com/2014/01/20-wonderful-online-museums-and-sites.html</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/online&quot;&gt;online&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/museums&quot;&gt;museums&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/sites&quot;&gt;sites&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/field&quot;&gt;field&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/trips&quot;&gt;trips&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/class&quot;&gt;class&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/%22educational+technology%22&quot;&gt;educational technology&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/technology&quot;&gt;technology&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 27 Jan 2014 12:07:12 -0000</pubDate>
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      <title>My Education Path :: Compare MOOC courses from different providers</title>
      <link>http://myeducationpath.com/alternatives</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/education&quot;&gt;education&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/courses&quot;&gt;courses&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/MOOCs&quot;&gt;MOOCs&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/path&quot;&gt;path&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/providers&quot;&gt;providers&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 29 Jul 2013 08:54:43 -0000</pubDate>
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      <title>Udacity - Introduction to Physics Course (PH100)</title>
      <link>http://www.udacity.com/overview/Course/ph100/CourseRev/1</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/education&quot;&gt;education&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/%CE%A6%CF%85%CF%83%CE%B9%CE%BA%CE%AE&quot;&gt;Φυσική&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/science&quot;&gt;science&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/teachers&quot;&gt;teachers&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/teaching&quot;&gt;teaching&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Fri, 28 Dec 2012 17:11:24 -0000</pubDate>
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      <title>Physics Games - online physics-based games</title>
      <link>http://www.physicsgames.net</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;Πολλά ηλεκτρονικά παιχνίδια φυσικής - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/simulation&quot;&gt;simulation&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/interactive&quot;&gt;interactive&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/Software&quot;&gt;Software&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/game&quot;&gt;game&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Sun, 16 Dec 2012 10:38:35 -0000</pubDate>
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      <title>Physion - Physics Simulation Software</title>
      <link>http://physion.net</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;Πολύ καλό πρόγραμμα για προσομοιώσεις σε ζητήματα μηχανικής - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/science&quot;&gt;science&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/simulation&quot;&gt;simulation&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/interactive&quot;&gt;interactive&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/Software&quot;&gt;Software&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/teachers&quot;&gt;teachers&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/technology&quot;&gt;technology&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Fri, 14 Dec 2012 14:27:48 -0000</pubDate>
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      <title>Free Online Graph Paper / Multi-Width</title>
      <link>http://incompetech.com/graphpaper/multiwidth/</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/free&quot;&gt;free&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/online&quot;&gt;online&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/graph&quot;&gt;graph&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/paper&quot;&gt;paper&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 12 Nov 2012 17:29:39 -0000</pubDate>
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    <item>
      <title>Album of flash animations of physics of waves and oscillations</title>
      <link>http://digilib.gmu.edu:8080/dspace/html/1920/2973/album-of-flash-animations.html</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/waves&quot;&gt;waves&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/flash&quot;&gt;flash&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/animations&quot;&gt;animations&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 12 Nov 2012 11:52:22 -0000</pubDate>
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      <title>Tour of the Electromagnetic Spectrum - Mission:Science</title>
      <link>http://missionscience.nasa.gov/ems/index.html</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/waves&quot;&gt;waves&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/%22electromagnetic+spectrum%22&quot;&gt;electromagnetic spectrum&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/spectrum&quot;&gt;spectrum&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/NASA&quot;&gt;NASA&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 12 Nov 2012 11:35:35 -0000</pubDate>
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      <title>Visualizing Electricity and magnetism from MIT</title>
      <link>http://web.mit.edu/viz/EM/flash/E&amp;M_Master/E&amp;M.swf</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;Visualizing Electricity and magnetism from MIT - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/no_tag&quot;&gt;no_tag&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 12 Nov 2012 11:31:11 -0000</pubDate>
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      <title>Science Is Fun Home Experiments</title>
      <link>http://scifun.chem.wisc.edu/HOMEEXPTS/HOMEEXPTS.html</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;Add joy and share the fun of scientific experimentation with friends and family members. Safety comes first. Be sure to follow each instruction carefully. - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/stratisvalakos&quot; title=&quot;View stratisvalakos's content in group&quot;&gt;stratisvalakos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/science&quot;&gt;science&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/collaboration&quot;&gt;collaboration&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/education&quot;&gt;education&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/stratisvalakos&quot; title=&quot;View stratisvalakos's content in group&quot;&gt;stratisvalakos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Sat, 27 Oct 2012 11:45:00 -0000</pubDate>
    </item>
    <item>
      <title>Einstein Archives Online</title>
      <link>http://www.alberteinstein.info</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;Βάση δεδομένων που αφορά στον Einstein - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/Einstein&quot;&gt;Einstein&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/%CE%91%CE%B9%CE%BD%CF%83%CF%84%CE%AC%CE%B9%CE%BD&quot;&gt;Αινστάιν&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/science&quot;&gt;science&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/physics&quot;&gt;physics&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/history&quot;&gt;history&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/People&quot;&gt;People&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/teachers&quot;&gt;teachers&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Fri, 26 Oct 2012 07:54:32 -0000</pubDate>
    </item>
    <item>
      <title>Panepistimia.edu.gr | Ο απόλυτος οδηγός για τα Ελληνικά Πανεπιστήμια</title>
      <link>http://www.panepistimia-edu.gr</link>
      <description>&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/%22%CE%BA%CE%BF%CE%B9%CE%BD%CF%89%CE%BD%CE%B9%CE%BA%CE%AC+%CE%B4%CE%AF%CE%BA%CF%84%CF%85%CE%B1%22&quot;&gt;κοινωνικά δίκτυα&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/teachers&quot;&gt;teachers&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/education&quot;&gt;education&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Thu, 19 Apr 2012 11:25:57 -0000</pubDate>
    </item>
    <item>
      <title>Το σύμπαν που αγάπησα Channel - YouTube</title>
      <link>http://www.youtube.com/user/ToSimpanPouAgapisa/videos</link>
      <description>&lt;p&gt;&lt;strong&gt;Comments:&lt;/strong&gt;&lt;ul&gt;&lt;li&gt;Οι εκπομπές των δύο Ελλήνων αστροφυσικών Μάνου Δανέζη και Στράτου Θεοδοσίου στο Youtube. - &lt;small&gt;&lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/small&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Tags:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/teaching&quot;&gt;teaching&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/astronomy&quot;&gt;astronomy&lt;/a&gt;, &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/tag/youtube&quot;&gt;youtube&lt;/a&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;by:&lt;/strong&gt; &lt;a href=&quot;https://groups.diigo.com/group/dfebookmarks/content/user/physiart&quot; title=&quot;View George Panagiotakopoulos's content in group&quot;&gt;George Panagiotakopoulos&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Wed, 07 Mar 2012 08:03:34 -0000</pubDate>
    </item>
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