What are solids Home › Forums › setting the stage › solids as quantum systems › What are solids This topic has 0 replies, 1 voice, and was last updated 1 day, 4 hours ago by Naila Fayyaz. Viewing 1 post (of 1 total) Author Posts September 13, 2026 at 6:58 pm #14940 Naila FayyazParticipant Solids are tightly closed 3D structures of atoms. Atoms or molecules are held so close that they give them a definite shape. 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