diagram.py

Created on September 29, 2021

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le phenomene de diffraction c est quand une onde a sa ou ses directions de 
propagation modifiees a cause d une ouverture ou d un obstacle partiel pour 
lesquelles ces changements de directions ne peuvent pas s expliquer par la 
refraction ni par la reflexion

O=A/a
L=O*D*2
L=(2*A*D)/a
Ad=(L*a)/2*D
Ab=(L"*a)/(2*D) (2*Ab)/L"=a/D Ad=(L*Ab)/L"
A=c/f

O demi ouverture angulaire
A longeur d onde
a largeur du rectangle
L largeur de la tache de difraction
D distance entre l ecran et le fil
c celerite
f frequence

quand +ou- ds l enouce c l incertitude type

u(a)= a * u(d)/d

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