Home › Forums › setting the stage › solids as quantum systems › Definition of solid This topic has 1 reply, 2 voices, and was last updated 1 year, 2 months ago by laitvo. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts September 25, 2023 at 2:08 pm #8991 Richie32Participant A solid is a substance with a definite shape whose atoms are arranged in a regularly repeating pattern. September 25, 2023 at 8:42 pm #9006 laitvoParticipant Interesting! What would you mean by the regularly repeating pattern, please; I thought this only applied to crystals? Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In