Fig. 1: Random thickness field and various length scales.
From: Branched flows of flexural waves in non-uniform elastic plates
a A schematic diagram of a piece of the thin elastic plate. Thickness is greatly exaggerated. b The plate carries a pulse with a predominant wavelength \(\lambda \ll {L}_{{{{{{\rm{c}}}}}}}\), where \({L}_{{{{{{\rm{c}}}}}}}\) is the correlation length of randomness. c The randomness field \(h(x,y)\) as a colormap, with \({{\langle }}{h}^{2}{{\rangle }}=0.04\), \({L}_{{{{{{\rm{c}}}}}}}=0.1\) m.
