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Figure 1


Fig. 1. (A) Schema of the setup to record wave propagation through sand caused by a walking ant. (B) Schema of the setup to simulate a walking ant with a electromagnetic shaker. s, sand; a, ant; mb, microphone membrane; pb, PerspexTM box; m, microphone; p, microphone preamplifier; ar, aluminium rod mounted on electromagnetic shaker; n, needle.





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