What is a solid? Home › Forums › setting the stage › solids as quantum systems › What is a solid? This topic has 0 replies, 1 voice, and was last updated 1 day, 1 hour ago by droxman. Viewing 1 post (of 1 total) Author Posts September 21, 2026 at 9:19 am #14984 droxmanParticipant It is an object which occupies space and it generally retains its shape under normal conditions. It can be composed of an ordered or disordered arrangement of atoms. 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