Gauge-Theoretic Study of Kundt Tube Experiment and Spontaneous Symmetry Transitions

In the Kundt’s experiment of acoustic resonance in closed tubes, two characteristic lengths were observed: one is wave-length sound waves and other scale dust striation. The latter has remained unresolved for its formation mechanism. Based on Fluid Gauge Theory proposed recently by author, mechanism striation studied. When weak enough, unobserved. Once wave intensity exceeds a threshold value, striations are formed. Formation understood as spontaneous transition symmetry acoustics. According to Theory, there stress field within fluid flow. Whereas isotropic before transition, it becomes anisotropic after transition. This analogous breaking known theory. Lagrangian structures both systems verified be either.