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Question
Write the characteristics of stationary waves.
Solution
- Stationary waves are characterized by the confinement of a wave disturbance between two rigid boundaries. It is meant that the wave does not move forward or backward in a medium (does not advance), it remains steady at its place. Hence, they are called “stationary waves or standing waves”.
- Certain points in the region in which the wave exists have maximum amplitude, called anti-nodes. At certain points, the amplitude is minimum or zero, called nodes.
- The distance between two consecutive nodes (or) anti-nodes is \[\frac{\lambda}{2}\].
- The distance between a node and its neighboring anti-node is \[\frac{\lambda}{4}\].
- The transfer of energy along the standing wave is zero.
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