physique0diffraction.py

Created by alten01

Created on March 05, 2023

747 Bytes


angle caracteristique de diffraction
teta=lambda/a
+a augmente +teta augmente +phenomene
de diffraction est important
+teta augmente +phenomene
de diffraction est important

des interferences se produisent lorsque
deux ondes sinusoidales(synchrone)
et presentant un dephasage constant
(=coherentes)se superposant dans
un milieu

deux ondes peuvent interfer si elles 
ont la mm frequence
interference constructive
amplitude max
interference destructive 
amplitude mini ou nulle

conditions dinterference
difference de marche
constructive si dioptrie=
klambda
sinon dioptrie=(2k+1)lambda/2

dioptrie=S2M-S1M

attention pour i on part de chaque
milieu et i correspond a la
distance entre les taches
donc pour 5 taches i=4

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