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{{Short description|Concept in physics}} ...try group]]s which classify the symmetries of a crystal both in space, and in a two-valued property such as [[electron spin]]. To represent such a proper ...

...of [[surfactant]]s, [[#Swimming|swimming]] is movement of individual cells in liquid environments. ...umble and swim phases. As a result, the trajectory of a bacterium swimming in a uniform environment will form a [[random walk]] with relatively straight ...