Questions to the experts
Energie, lumière, son
Où examiner l’énergie sous toutes ses formes (électrique, chimique, mécanique...), la lumière et les phénomènes optiques, ainsi que le son...
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By Anonyme (not verified) 22 years 10 months ago
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1 | By alain.chomat@f… 2 years 7 months ago |