Sand, powders, and other collections of visible-sized grains are found throughout daily life, from food and pharmaceuticals to soils and industrial materials. When grains of similar size are arranged regularly, they can form a strong crystal-like solid. Yet what happens inside such an ordered s...

Source: [Phys.org](https://phys.org/news/2026-08-soft-vibrations-reveal-granular-crystals.html)

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