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      <title>ora de fizica by Palce Adriana</title>
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      <description>pentru dragii mei elevi</description>
      <language>en-us</language>
      <pubDate>2018-03-16 16:47:48 UTC</pubDate>
      <lastBuildDate>2025-09-29 11:08:57 UTC</lastBuildDate>
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         <title>Radiatia electromagnetica</title>
         <author>adriana_palce</author>
         <link>https://padlet.com/adriana_palce/1atq7kogwg3u/wish/242918545</link>
         <description><![CDATA[<div>Introducere in lumea luminii </div>]]></description>
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         <pubDate>2018-03-16 16:50:52 UTC</pubDate>
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         <title>Wilhelm Conrad Röntgen</title>
         <author></author>
         <link>https://padlet.com/adriana_palce/1atq7kogwg3u/wish/265807665</link>
         <description><![CDATA[<div><strong>Wilhelm Conrad Röntgen&nbsp;</strong>a descoperit în anul <a href="/wiki/1895">1895</a> emisia unor <a href="/wiki/Radiație">radiații</a> penetrante, pe care le-a numit <a href="/wiki/Raze_X">radiații X</a> care, după moartea sa și în pofida testamentului său, au fost denumite <em>raze Röntgen</em>.</div>]]></description>
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         <pubDate>2018-06-06 07:20:34 UTC</pubDate>
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         <title>SQUAD R.e.t.a.r.d </title>
         <author></author>
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         <pubDate>2018-06-06 07:20:56 UTC</pubDate>
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         <title>Best squad</title>
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         <link>https://padlet.com/adriana_palce/1atq7kogwg3u/wish/265808022</link>
         <description><![CDATA[<div>APLICATII ALE RADIATIILOR ELECTROMAGNETICE<br>Campul electromagnetic: esteansamblul campurilor electrice si magnetice, care oscileaza si se genereaza reciproc.</div><div>              Unde electromagnetice: esteun camp electromagnetic care se propaga.</div><div><br></div><div>          Undele (radiatiile) electromagnetice pot fi grupate dupa fenomenul care sta la baza producerii lor. Astfel, radiatiile numite <em>hertziene</em>se datoresc oscilatiei electronilor in circuitele oscilante LC sau in circuitele electronice speciale.</div><div>           Prin transformarea energiei interne a oricarui corp in energie electromagnetica rezulta <em>radiatiile termice.</em> Radiatiile electromagnetice, numite <em>radiatiile de franare</em>, apar la franarea brusca a electronilor in campul nucleului atomic. <em>Radiatiile sincrotron</em> (denumirea se datoreaza faptului ca acest fenomen a fost pus in evidenta la o instalatie de accelerare a electronilor in camp magnetic, numit sincrotron) si au originea in miscarea electronilor intr-un camp magnetic.<strong>Utilizari</strong>: - in radiolocatie: este folosita in navigare. Avioanele si vapoarele sunt dotate cu radiolocatoare, ca si aeroporturile care sunt prevazute cu acest echipament pentru a dirija traficul aerian, aterizarile si decolarile avioanelor de asemenea. Radiolocatia poate fi activa sau pasiva.</div><div><br><br></div>]]></description>
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         <pubDate>2018-06-06 07:22:38 UTC</pubDate>
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         <title></title>
         <author></author>
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         <pubDate>2018-06-06 07:23:11 UTC</pubDate>
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