BRAINCAKEPrinciple of Superposition
The principle of superposition states that when two waves meet the total displacement at a point is equal to the vector sum of the individual displacements at that point.
Where two crests meet a constructive interference occurs. The two waves are in phase so the vector sum is zero and you get reinforcement.
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Key terms in this lesson
- Interference
- The formation of points of cancellation and reinforcement where two coherent waves overlap and superpose.
- Vector quantity
- A physical quantity that has both magnitude and direction.