answer Home › Forums › setting the stage › so what’s the problem? › answer This topic has 0 replies, 1 voice, and was last updated 1 day, 22 hours ago by stephen wienk. Viewing 1 post (of 1 total) Author Posts September 30, 2026 at 7:30 am #15135 stephen wienkParticipant The problem is that solving the Schrödinger equation takes way to much time for the whole system. This is why approximations have to be made to estimate the properties of the solid. 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