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      <title>Thème 1 : La lumière by BARBIER</title>
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      <language>en-us</language>
      <pubDate>2016-09-04 18:07:25 UTC</pubDate>
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      <item>
         <title>Introduction</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/121615273</link>
         <description><![CDATA[<div>Évolution de la température terrestre</div>]]></description>
         <enclosure url="https://www.youtube.com/watch?v=EoOrtvYTKeE" />
         <pubDate>2016-09-05 16:27:45 UTC</pubDate>
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      <item>
         <title>IV/ La couleur d&#39;une planète a t-elle une influence sur sa température ?</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/126202770</link>
         <description><![CDATA[<div>Absorption Objet blanc VS noir</div>]]></description>
         <enclosure url="https://www.youtube.com/watch?v=HYrKa4C9-kQ" />
         <pubDate>2016-09-25 10:58:45 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/126202770</guid>
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      <item>
         <title>I/ Le système solaire</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/265148827</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=9IkT7L0PyVE" />
         <pubDate>2018-06-02 13:23:28 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/265148827</guid>
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      <item>
         <title>VI/ L&#39;effet de serre naturel</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/265149254</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=dtAX_gotGlQ" />
         <pubDate>2018-06-02 13:31:45 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/265149254</guid>
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      <item>
         <title>VII/ L&#39;effet de serre additionnel</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/265149280</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=f3rGH5Ms-lI" />
         <pubDate>2018-06-02 13:32:12 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/265149280</guid>
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         <title>V/ Comparaison effet de serre naturel et additionnel</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/279488168</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/89289702/b02411512e33637cedc303996609129b/effet_de_serre_2.mp4" />
         <pubDate>2018-09-10 16:08:36 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/279488168</guid>
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      <item>
         <title>Chapitre 1 : Du Soleil à l&#39;effet de serre</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565447716</link>
         <description><![CDATA[]]></description>
         <enclosure url="" />
         <pubDate>2023-04-24 09:43:55 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565447716</guid>
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         <title>IV/ Mesurer une distance à partir d&#39;une échelle</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565461548</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=XH6_HhqaqNk" />
         <pubDate>2023-04-24 09:57:53 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565461548</guid>
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         <title>II/ Propagation de la lumière</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565463352</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.pccl.fr/physique_chimie_college_lycee/cinquieme/optique/propagation_lumiere_flash.htm" />
         <pubDate>2023-04-24 09:59:52 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565463352</guid>
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         <title>Chapitre 2 : Ombre et lumière</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565465215</link>
         <description><![CDATA[]]></description>
         <enclosure url="" />
         <pubDate>2023-04-24 10:01:56 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565465215</guid>
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         <title>IV/ Condition pour voir un objet diffusant</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565473952</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.pccl.fr/physique_chimie_college_lycee/cinquieme/optique/source_primaire_secondaire_flash.htm" />
         <pubDate>2023-04-24 10:11:17 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565473952</guid>
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         <title>II/ Source primaire et objet diffusant</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565475268</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=0YSH-UfIO7E" />
         <pubDate>2023-04-24 10:12:42 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565475268</guid>
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         <title>IV/ Bilan : Condition de visibilité des sources lumineuses</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565675281</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=PJQJP6_bVVM" />
         <pubDate>2023-04-24 13:10:53 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565675281</guid>
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         <title>IV/ Bilan Voir une source lumineuse</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565684177</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-04-24 13:16:45 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565684177</guid>
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      <item>
         <title>V/ Les phases de la Lune</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565762088</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.pccl.fr/physique_chimie_college_lycee/cinquieme/optique/phases_lune_flash.htm" />
         <pubDate>2023-04-24 14:05:06 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565762088</guid>
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      <item>
         <title>VI/ Les ombres</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565762889</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet.com/MRBARBIER/5-me-les-ombres-oxvf4uxsujs7" />
         <pubDate>2023-04-24 14:05:35 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565762889</guid>
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      <item>
         <title>VII/ Les éclipses</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565817731</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/89289702/79e45a6d72863b7bdcfd41bdeb82262c/5T1C2_7B__Bilan__clipses.pdf" />
         <pubDate>2023-04-24 14:38:33 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565817731</guid>
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      <item>
         <title>I/ Propagation de la lumière</title>
         <author>MRBARBIER</author>
         <link>https://padlet.com/MRBARBIER/5T1/wish/2565977788</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/89289702/082385f83fc6af1b3c0ad7610bf32c95/Lumi_re_invisible.avi" />
         <pubDate>2023-04-24 16:26:56 UTC</pubDate>
         <guid>https://padlet.com/MRBARBIER/5T1/wish/2565977788</guid>
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