| The result of a superposition of two harmonic oscillations depends
on their relative phase.
If the two oscillations are in-phase, there is a constructive
interference and the resulting amplitude is the sum of the two
amplitudes.
If the two oscillations are anti-phase, their interference is
destructive and the amplitude of the resulting oscillation is the
difference of the two amplitudes. If the latter are equal to each other,
the resulting amplitude is zero, the two oscillations completely cancel
each other. Move the slider to change the phase of one of the
oscillations |