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Les ondes
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Les ondes. Longueur d’onde ( ). Fréquence (f). Nombre de déformations par seconde Unité de mesure : Hertz (Hz) 1 Hz = 1 oscillation / seconde. Amplitude (A). Période (T). Temps pour effectuer un cycle complet (secondes) T = 1/f. Décibels (dB). Échelle logarithmique.
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Les ondes
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Presentation Transcript
Fréquence (f) • Nombre de déformations par seconde • Unité de mesure : Hertz (Hz) • 1 Hz = 1 oscillation / seconde
Période (T) • Temps pour effectuer un cycle complet (secondes) • T = 1/f
Décibels (dB) • Échelle logarithmique
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