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Physique-Chimie |
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| Lycée et enseignement supérieur |
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Centrale-Supélec - PSI 2014
Physique :
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| Sujet |
Quelques aspects de la physique du viseur de casque TopOwl® :
Affichage par tubes cathodiques : canon à électrons, disposition de déviation du faisceau
Affichage par LCD (liquid crystal display) : expérience préliminaire, cellule d'affichage à nématique torsadé (propagation d'une onde électromagnétique polarisée rectilignement dans un nématique torsadé, afficheur extra-plat)
Détection électromagnétique de posture : paire de bobines parallèles, détection de posture (principe de fonctionnement)
Énoncé : http://b.louchart.free.fr/Documents/CE/01/CS/Centrale_PSI_2014_Physique_Enonce.pdf |
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| Corrigé |
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