Home › Forums › Hyperfine course › magnetic hyperfine interaction › in free atoms – task 1 › L and S orientations This topic has 0 replies, 1 voice, and was last updated 3 weeks, 3 days ago by nvrafelg. Viewing 1 post (of 1 total) Author Posts March 10, 2025 at 4:50 pm #6320 nvrafelgParticipant L and S are parallel and pointing in opposite directions when J = 0. They are parallel and pointing in the same direction when J = 2. When J = 1, L and S are perpendicular to each other. 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