Concept information
Terme préférentiel
sound velocity
Définition(s)
- The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or one kilometre in 2.91 s or one mile in 4.69 s. It depends strongly on temperature as well as the medium through which a sound wave is propagating. At 0 °C (32 °F), the speed of sound in air is about 331 m/s (1,086 ft/s; 1,192 km/h; 740 mph; 643 kn). The speed of sound in an ideal gas depends only on its temperature and composition. The speed has a weak dependence on frequency and pressure in ordinary air, deviating slightly from ideal behavior. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Speed_of_sound)
Concept(s) générique(s)
Synonyme(s)
- sound speed
Traductions
-
français
-
vitesse des ondes acoustiques
-
vitesse du son
URI
http://data.loterre.fr/ark:/67375/MDL-TJPVBMC2-1
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