Kirchhoff theory

Kirchhoff theory

[′kərk‚hōf ‚thē·ə·rē]
(optics)
A theory of diffraction of light which gives a mathematical formulation of Huygens' principle, based on the wave equation and Green's theorem, and enables quantitative determination of the amplitude and phase at any point to a very close approximation.
References in periodicals archive ?
The Kirchhoff theory is widely used to describe light scattering from a rough surface due to its relative simplicity within certain limits.
However, Alexander-Katz and Barrera [6] suggested a modification of the Kirchhoff theory for calculating the gloss values where the dimensions of the detector field were considered.
Some of the textured surfaces of interest in this work are too rough for the Kirchhoff theory to be valid ([S.