Home › Forums › setting the stage › solids as quantum systems › Definition of a solid This topic has 0 replies, 1 voice, and was last updated 23 hours, 38 minutes ago by twynter94. Viewing 1 post (of 1 total) Author Posts January 8, 2025 at 11:49 pm #12275 twynter94Participant A solid is a state of matter in which the constituent particles are closely and tightly packed. The constituent particles are not able to freely move around but they are able to vibrate in place. 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