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Signaler un abus

ffi 14 novembre 2012 09:50
ffi

L’énergie d’un rayon de lumière n’est pas du genre « énergie cinétique » (mv²), car la lumière n’est pas un corpuscule.
 
L’onde lumineuse a une vitesse constante, qui dépend du milieu de propagation, et son énergie dépend de sa fréquence (h.nu).

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