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Science & Vie Junior Hors Série (Digital)

Science & Vie Junior Hors Série (Digital)

1 Issue, HS No. 138

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Les particules désignent les plus petits composants de la matière, comme les atomes, constitués d’un noyau (fait de protons et neutrons), autour duquel tournent des électrons. Une molécule est un assemblage d’au moins deux atomes. Laser : rayon lumineux constitué de photons qui ont tous la même énergie et qui vont tous dans la même direction. Un électro-aimant est une bobine qui, quand elle est parcourue par un courant électrique, agit comme un aimant : elle émet un champ magnétique qui agit à distance sur les particules chargées (soit pour les attirer, soit pour les repousser).…
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Science & Vie Junior Hors Série (Digital) - 1 Issue, HS No. 138

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