jsc2023e053546 (3/3/2023) --- Granular Sound: open sample cell, partially filled with glass beads, with one accelerometer exposed whose position from the voicecoil-driven wall on the left is indicated by a metal ruler. Also visible: the sample cell walls are padded with foam for acoustic decoupling of the glass bead packing. Image courtesy of DLR-MP.
Date March 3, 2023