Superposition is the main characteristic of

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Superposition is a fundamental principle of wave mechanics. It states that when two or more waves overlap, the resultant displacement at any point and at any instant is the vector sum of the displacements due to individual waves at that point and instant. This characteristic is unique to wave motion.

The principle of superposition can be expressed as:

$y_{res u lt an t} (x, t) = i = 1 \sum n y_{i} (x, t)$

where $y_{i} (x, t)$ is the displacement of the $i$ -th wave.

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