Solid Home › Forums › setting the stage › solids as quantum systems › Solid This topic has 0 replies, 1 voice, and was last updated 11 hours, 58 minutes ago by Yissah. Viewing 1 post (of 1 total) Author Posts July 28, 2026 at 5:35 am #14753 YissahParticipant A solid is a form of matter in which atoms, ions or molecules, are well packed together and maintain a rigid shape and volume. the atoms, ions, and molecules only vibrate around an equilibrium position. 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