Physics 312 Lecture: "Sound Waves I." Apr 6, 1998

• Sound waves can travel through liquid, solid or gaseous media
• The speed of a sound wave is given by the square root of the ration of bulk modulus to density
• One may describe sound waves by the displacement of individual molecules as a function of space and time
• One may also describe sound waves by the pressure in the medium as a function of space and time
• The intensity of a wave is the power it transmits through some area
• Intensity is proportional to the SQUARE of the amplitude of a wave

This lecture discusses material in Chapter 17 of Serway.

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