Fig. S5.

Setup of the physical experiment. Glass rods were pulled upward by two stretched springs. The strength of the springs as well as the initial stretched length were varied to vary the resulting acceleration. A pulley system was used to pull the rod down into the bath and stretch the springs. Lubricated steel guide rails prevented any lateral motion of the rod. To accurately track the rod’s motion, a random dot pattern was placed inside the rod. An IDT N3 high-speed camera recorded the motion at 1,500 fps with a shutter speed of 100–200 μs.