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A ripple tank is placed above a mirror and a projection screen. Two synchronous point sources, whose frequency can be varied, tap the surface of the water and produce circular waves. The interference pattern of the waves including the lines of nodes can be observed on the screen.
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This is too short video
Posted 4 months by Anonymous 00:00:08
maybe indication of the nodes and constructive interfernce wud have been helpful…
Posted 4 months by Anonymous 00:01:41