(ADVANCED PHYSICS TOPIC)
Blowing across the top of a pipe or bottle will produce a sound. This is caused by standing waves in the pipe.
In general we can see that the frequency for the nth harmonic is given by:
But only exists for odd values of n.
A clarinet is a musical instrument that behaves like a closed pipe.
| Example |
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| A note of constant frequency is produced by a loudspeaker placed above an open pipe with a movable piston. The length l of the air column is slowly increased from zero. When l reaches 17.0 cm, the sound detected increases greatly in volume.
Calculate
(b) the next length l when the sound detected increases greatly in volume.
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