medium

Physics

Cooperation of two intruders moving side by side in a granular medium

Written by DD Carvalho, Y. Bertho, A. Seguin, EM Franklin, BD Texier. Two spheres moving side by side in granular material. Credit: Paris-Saclay University / FAST In bird colonies, schools of fish, and cycling protons, important interactions occur between individuals via the surrounding fluid. These interactions are well understood in fluids such as air and water, but what happens when…