SOUND WAVES
CONTENT
- Meaning and Sources of Sound
- Transmission of Sound
- Some Applications of Sound Waves
- The Characteristics of Sound
- Forced Vibration
- Vibrations in a Closed Pipe
- Vibrations in an Open Pipe
- Overtones in Strings
Meaning and Sources of Sound
Sound is a form of wave motion which is conveyed through an elastic medium from a vibrating body to a listener. It is a longitudinal wave. Sound has a number of sources including sound from animals, moving aircraft, vehicles, vibrating turning fork, etc.
Sound wave is also a mechanical wave. That is, it cannot travel through vacuum. There must be a material medium for its to propagate. Astronauts on the moon can only communicate each other via walkie-talkie even at close distance because there is no air molecule to propagate sound wave on the moon.
Transmission of Sound
Sound waves are produced from vibrating systems and travels as a series of compressions and rarefactions as discussed earlier. Sound waves do not travel through a vacuum.
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