Speed of Sound

Speed of Sound: The speed that a sound wave travels through a given medium. The speed of sound depends on several properties of the medium, most importantly its density. In the atmosphere, the speed changes with air temperature and pressure.

Table - speed of sound in air c, density of air ρ, acoustic impedance Z vs. temperature °C
Impact of temperature
°C c in m/s ρ in kg/m³ Z in Pa·s/m ...

TRANSONIC - At the speed of sound.
TRAPPED FETCH - A region of winds blowing across the surface of a body of water that is also moving so that that region remains over the generating waves (in phase with its winds) for a longer period of time.

Speed of Sound: At sea level the speed of sound is 1092 feet or 761 miles per hour. Split Low or High:Low or High pressure systems which are cutoff from the main west to east flow. Spring Equinox: Occurs on or about March 21.

speed of sound, speed of light). A shift to lower frequency (relative to a reference frequency) is sometimes called a red shift whereas a shift to higher frequency is sometimes called a blue shift, ...

See also: Light, Atmosphere, Water, Temperature, Surface