Home › Forums › Hyperfine course › magnetic hyperfine interaction › in free atoms – task 1 › task 1 This topic has 0 replies, 1 voice, and was last updated 1 year, 6 months ago by Jef_L. Viewing 1 post (of 1 total) Author Posts March 13, 2023 at 3:48 pm #4246 Jef_LParticipant J is the vector sum of L and S, so J = 1+1=2,1+0=0+1=1,0+0=0 parallel and pointing in opposite directions: J = 0 perpendicular to each other: J = 1 parallel and pointing in the same directions: J = 2 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