Diffraction of light by ultrasonic waves - Deduction of the different theories from the generalised theory of Raman and Nath
The closed expressions for the intensities of the first and second order lines have been calculated, on the basis of the generalised theory of Raman and Nath. The results are found identical with those obtained by Brillouin, Rytov and Erwin David. The conditions under which these results hold good have been discussed mathematically. The validity of the generalised theory at different frequencies has also been discussed.