1. The problem statement, all variables and given/known data For standing wave, I have read that there are certain points on the wave that don't move at all, nodes. However, for a standing wave the shouldn't the resultant wave have no displacement because we now have two waves on the same rope with the same amplitude and frequency and according to the interference of waves we should add the amplitude of each wave to get the resultant wave. Since each wave has the same amplitude but in the opposite direction, that means the entire wave should not be moving right? Thanks for your help.