maximum destructive interference occurs at points where the phase difference
Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero. The images below show the effects of destructive interference between two waves with the same amplitude and frequency (Ï) described by the equations: and. where Î´ is the phase difference between the waves, k is the wave number, x is the wave position and t is time.