speed of sound

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speed of sound

The speed at which sound travels in a given medium under specified conditions. The speed of sound at sea level in the International Standard Atmosphere is 1108 ft/second, 658 knots, 1215 km/hour. See also hypersonic; sonic; subsonic; supersonic; transonic.
References in periodicals archive ?
Payload packages typically contain Conductivity, Temperature and Depth (CTD) sensors whose output feeds into Sound Speed Profiles (SSPs) which are graphs that plot local sound speed against depth.
The generic application of sound localization techniques, sound speed is selected as a constant ([V.
Warmer water above and below results in a faster sound speed.
ZST automatically compensates for differences in sound speed propagation from patient echo information.
The series comes with the new carbon fiber speaker providing better sound with more enhanced sound pressure and higher sound speed.
The sound speed plummeted and the spherically outgoing waves stalled.
Lately, I'm getting emailed news releases from Blair FitzGibbon, president of another PR firm called, Sound Speed PR.
Such works are impossible to digitize--and not only because the "visual magma" is not translatable, but because many of Gehr's early films, including Serene Velocity; all of Dorsky's films; and all the Warhol silents must be shown at silent speed (16 or 18 frames per second), which is a third slower than sound speed.
Delphinus claims it is the first company to introduce an automated whole breast ultrasound system to integrate ring transducer technology that captures reflection echoes from all directions around the breast and measures transmitted signals coming through the breast, depicted by a color analysis of sound speed and attenuation values.
By measuring and combining the quantitative values of sound speed and attenuation from signals that pass through tissues, a cross-sectional color image map is created using an established color spectrum, signifying the least to greatest relative tissue stiffness of the full volume of breast tissue.
Because the target speed is set to be more than half of the sound speed in the figure, the Doppler effect is clearly seen where the sound wavelength in the forward direction is shorter than that in the rear direction and the target position is shifted to forward from each center of the propagation.
Imaging detectors based on this new principle should be much less susceptible to the effects caused by the uneven sound speed in tissues.