Solid Home › Forums › setting the stage › solids as quantum systems › Solid This topic has 0 replies, 1 voice, and was last updated 3 days, 23 hours ago by bkyeyune. Viewing 1 post (of 1 total) Author Posts February 5, 2026 at 9:57 am #14484 bkyeyuneParticipant A solid is a state of matter composed of an array of atoms arranged to form a crystalline or amorphous structure. 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