Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Viewing 1 post (of 1 total) Author Posts October 2, 2022 at 6:36 am in reply to: Solid #6770 jnunezParticipant 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. Author Posts Viewing 1 post (of 1 total)
