third sound


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third sound

[′thərd ‚sau̇nd]
(cryogenics)
A type of wave propagated in thin films of superfluid helium (helium II), consisting of variations in film thickness and temperature.
References in periodicals archive ?
It allows them to hear the S3, an abnormal third sound in the heart's rhythm strongly associated with cardiac disease and heart failure.
When the diplacusis was most severe, he would also hear a third sound, either in response to an external sound or as a spontaneous sound that was close to the quality of his tinnitus.
This is the third Sound Women in the intimate studio theatre setting of the LBT's Cellar and the evening now takes place on a seasonal basis.
In one example, a subject presented with the sound "bah" while watching an image of a person whose mouth moves as if pronouncing the syllable "gah" will often perceive a third sound, "dah.
In molto legato playing, we listen for the creation of a third sound as two keys become one before releasing the first key.
An audible bleep in left and right headphones worn by Mr Moss told him which way to steer the car, and a third sound let him know when he was driving in a straight line.