# Waves/Sound Waves

Waves : 1 Dimensional Waves
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Examples - Problems - Solutions - Terminology

#### Sound Waves

Sound is a longitudinal compression-expansion wave through matter. The wave speed is

$c = ( \gamma R T_{abs} )^{1/2}$ (2.11)

where $\gamma$ and $R$ are constants and $T_{abs}$ is the absolute temperature. The absolute temperature is measured in Kelvins and is numerically given by

$T_{abs} = T_C + 273.16^{\circ}$ (2.12)

where $T_C$ is the temperature in Celsius degrees. The angular frequency of sound waves is thus given by

$\omega = ck = ( \gamma R T_{abs} )^{1/2} k .$ (2.13)

The speed of sound in air at normal temperatures is about $340 \mbox{ m} \mbox{ s}^{-1}$.

Waves : 1 Dimensional Waves
1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13
Examples - Problems - Solutions - Terminology