Radiation pressure on nonhomogenous inclusions in the field of progressive plane wave on the infinite string

The problem of the calculation of radiation pressure on nonhomogenous inclusions on the string in the field of progressive plane wave was studied. The pressure was shown to be expressed through energy densities on the margins of inclusion and equals half-difference of the average density of energy before the inclusion and average density of energy behind it. The obtained data were shown to be true at certain string shift smoothness and its two first derivatives. Like quant mechanics properties of elements of scattering matrix of the resulting one-dimension problem in the terms of reflection coefficients and refraction index at lateral force are given. Physical correlation between matrix elements was analyzed. The results may be of a vast applied significance.