The velocity of longitudinal and transverse sound in helium-filled porous Vycor glass was measured and analyzed with the use of the Biot theory of sound propagation in fluid-filled porous media. From transverse wave velocities, the superfluid fraction was determined and, from longitudinal velocities, the elastic properties of the helium were determined.
No takes yet. Share an insight, caveat, or question.
Beamish et al. (1983) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: