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Substances can exist in three states of matter - solid, liquid and gas. All substances are made from particles, and the forces between the particles are different in solids, liquids and gases. The ...

Originally described in the context of particles drifting through liquid, Levy walk has been found to accurately describe a very wide range of phenomena, from cold atom dynamics to swarming bacteria.

Many products are dispersions or suspensions of particles in a liquid medium. Examples range from ceramics, adhesives, inks and paints through to drinks, foods, medicines and personal care products.