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Kundt's Pipe

To calculate the speed of sound by using resonance terms



In this experiment, the speed of sound in air will be measured by making use of Kundt’s tube.

The phenomenon of sound is composed of pressure waves propagating in material media. The frequency of sound depends on its sources, whereas its propagation speed depends on the medium within which it propagates. Sound waves can also create standing waves within bounded media whose one or both sides are closed. Standing waves are created by the superposition of waves of equal frequency and amplitude propagating in opposite directions, and they produce spatial patterns. With the help of measurements made on these patterns the speed of the waves can be measured. Kundt’s tube is an experimental set up which operates using this approach.