Solid Home › Forums › setting the stage › solids as quantum systems › Solid This topic has 0 replies, 1 voice, and was last updated 5 hours, 31 minutes ago by Gionni. Viewing 1 post (of 1 total) Author Posts September 22, 2026 at 3:21 pm #14999 GionniParticipant I usually think of solids as crystalline solids, but this is not always true. In fact, there exist amorphous solids as well. Naively, I’d say that a solid is a slab of matter whose shape does not change substantially with time. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In