Self-focusing on a point source using an acoustic time-reversal mirror (TRM) permits to test the invariance under time-reversal in fluids. The presence of vorticity in the fluid breaks time-reversal invariance as can be shown with a TRM by measuring the deflection of a time-reversed focused acoustic wave propagating through a uniform distribution of vorticity. Experimental as well as theoretical aspects are presented.
No takes yet. Share an insight, caveat, or question.
Roux et al. (1995) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: