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<string language="fre"><![CDATA[3 films. Diffraction par un trou circulaire : - diffraction par un trou de rayon fixe : étude qualitative ; - diffraction par un trou de rayon variable : étude qualitative et quantitative (influence du diamètre du trou diffractant sur le diamètre de la tache centrale de diffraction). Diffraction par un écran opaque circulaire : étude qualitative.]]></string></description>
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