ON THE SURFACE WAVES GENERATED BY A VIBRATING SIDE WALL

The method of functions of complex variable is used in solving the problem of small amplitude surface waves on water generated by a vibrating side wall, the general formula for the complex velocity is given, and three different types of wall vibrations are discussed in some detail.
Two different methods were used for the measurements and recording of surface waves. The experimental results in the case of small amplitude agree well with theory. Some observation and recording were made with large amplitudes. Second subharmonic vibrations were observed in the surface waves when the driving frequency is above a certain critical value. This phenomenon is yet to be accounted for theoretically.