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The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. More simply, the speed of sound is how fast vibrations travel. At 20 °C (68 °F), the speed of sound in air is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or 1 km in 2.92 s or one mile in 4.69 s. It depends strongly on…
History, Measurement & Standards
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Speed of sound | Acoustic impedance | Z | 1.00 | infobox |
| Speed of sound | Audio frequency | AF | 1.00 | infobox |
| Speed of sound | Characteristic | Symbols | 1.00 | infobox |
| Speed of sound | Particle displacement | δ | 1.00 | infobox |
| Speed of sound | Particle velocity | v, SVL | 1.00 | infobox |
| Speed of sound | Sound energy | W | 1.00 | infobox |
| Speed of sound | Sound energy density | w | 1.00 | infobox |
| Speed of sound | Sound exposure | E, SEL | 1.00 | infobox |
| Speed of sound | Sound intensity | I, SIL | 1.00 | infobox |
| Speed of sound | Sound power | P, SWL, LWA | 1.00 | infobox |
| Speed of sound | Sound pressure | p, SPL, LPA | 1.00 | infobox |
| Speed of sound | Transmission loss | TL | 1.00 | infobox |
| Speed of sound | is a | distance travelled per unit of time by a sound wave as it propagates through an elastic medium | 0.90 | text |
| Speed of sound | is a | function of sound frequency | 0.90 | text |
| Speed of sound | is a | temperature | 0.90 | text |
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