Solid - compmatphys

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September 29, 2022 at 7:44 pm #6735

thsr
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Material is considered as solid, if elements (atoms/ions) in it are somewhat fixed positions with each other (do not move related to each other).

October 2, 2022 at 6:36 am #6770

jnunez
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The case where the atoms/ions are fixed is an approximation. Consider, for example, the phonons. A phonon is a collective movement of the atoms in a crystal.
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