A must be 1 if it is an ion so D looks good as nothing else matches. Guenther Lee 42 p. Lets say thats the wave speed and you were asked Create an equation that describes the wave as a function of space and time.
V f times lambda where.
For ks xx Dx. Wavenumber k -vector Wave vector. So what do we mean by a wave velocity or speed. The maximum particle velocity is equal to four times the wave velocity if.