Home › Forums › density functional theory › the Born-Oppenheimer approximation › Born-Oppenheimer This topic has 0 replies, 1 voice, and was last updated 1 week, 3 days ago by Tuur.B. Viewing 1 post (of 1 total) Author Posts October 2, 2025 at 9:15 am #13331 Tuur.BParticipant When the speed of the electron is not large compared to that of the nuclei. 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