L and S orientation homepage › Forums › three J-values › L and S orientation This topic has 0 replies, 1 voice, and was last updated 1 year, 11 months ago by Jannes. Viewing 1 post (of 1 total) Author Posts March 7, 2021 at 10:24 am #3615 Score: 0 JannesParticipant J=2 when L and S are parallel pointing in the same direction: the angular momenta then add up. J=1 when they are perpendicular: they both are 1 and both point in a totally different direction, so do not add up nor cancel. J=1 when parallel and in opposite directions: they cancel that way. 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