Constructive – Destructive Interference
Constructive – Destructive Interference: The resultant of two oscillatory movements is the vectorial addition of the two oscillations.
Let us assume graph 1 is the Applied Oscillation and graph 2 is the Reaction Oscillation. Graph 3 is the resultant.
The above figures – left and right – show two extreme cases when the oscillations are in step (phase) or in counter-phase.
The phase angle between Applied and Reaction Oscillations results from the Response Delay Time and Response Frequency.
In fig.1 the Resultant Amplitude is larger than the Applied Oscillation, while in Fig.2 it opposes the Applied Oscillation.
If Applied and Reaction Oscillation Frequencies are different Resultant Curve is distorted (no longer sinusoidal).
