In bird nests, colleges of fish and biking pelotons, substantial communications happen in between people via the bordering liquid. These communications are well comprehended in liquids such as air and water, yet what occurs when things relocate via something like sand? It ends up that comparable communications happen in granular products– points like dirt or sand– and they play an important function in day-to-day contexts. Think about rakes puncturing farmland, pets delving underground, origins pressing via dirt, and even robotics discovering the surface area of Mars.
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