Home › Forums › setting the stage › solids as quantum systems › What is a solid? This topic has 0 replies, 1 voice, and was last updated 20 hours, 10 minutes ago by apsholar. Viewing 1 post (of 1 total) Author Posts November 14, 2025 at 4:20 pm #14097 apsholarParticipant Solid is a state of matter in which the atoms are arrange periodically 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