D7FARON3DS
3D diffraction pattern of a round aperture as a circular
symmetric plot using two coordinates.
Radius of aperture is a
The coordinate on the observation screen is R
Wavelength λ, distance from aperture to screen is X.
One may look at the plot from different angles, change colors, and make a "Contour Plot".
i := 0 .. N
j := 0 .. N
xi := ( −20) + 1.5001⋅ i
2
R ( x , y) := ( x) + ( y)
N ≡ 30
y j := −20 + 1.5001⋅ j
2
X := 4000
d≡2
a ≡ 0.1
M i , j := g( xi , yj)
M
λ ≡ .0005
 J1 2 ⋅ π ⋅ a⋅ R( x , y)  
 
X⋅ λ  
g( x , y) := 

  2⋅ π ⋅ a⋅ R( x , y)  
X⋅ λ  
 
2