#Use the equation <math>v=f \lambda</math> to find the [[Wave Speed|wavespeed]] of the [[wave]].
#Repeat for different 5 [[frequency|frequencies]] of the [[wave]].
====Improving [[Precision]]====
: Calculate an [[Mean Average|average]] for the [[Wave Speed|wave speed]] over a greater number of [[results]] to reduce the effect of [[Random Error|random error]]s, improving the [[precision]].