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Kirchhoff's diffraction formula
Kirchhoff
's diffraction formula
(also
Fresnel–Kirchhoff diffraction formula
) can be used to model the
propagation
of light in a wide range of configurations, either
analytically
or using
numerical modelling
. It gives an expression for the wave disturbance when a
monochromatic
spherical wave
passes through an opening in an
opaque
screen. The equation is derived by making several approximations to the
Kirchhoff integral theorem
which uses
Green's theorem
to derive the solution to the homogeneous
wave equation
.
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