Code: 3D30.60
Demo Title: Kundt's Tube
Subject: Resonance Cavities
Description: At one end of the tube is a loudspeaker attached to a signal generator producing a sine wave. The other end of the tube is blocked by a movable piston which can be used to adjust the length of the tube. The sound generator is turned on and the piston is adjusted until the sound from the tube suddenly gets much louder. This indicates that the tube is at resonance.
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