Responsible party: vinc0053

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Please try to include the following

• main points understood, and expand them - what is your understanding of what the points were.
  • expand these points by including many of the details the class discussed.
• main points which are not clear. - describe what you have understood and what the remain questions surrounding the point(s).
  • Other classmates can step in and clarify the points, and expand them.
• How the main points fit with the big picture of QM. Or what is not clear about how today's points fit in in a big picture.
• wonderful tricks which were used in the lecture.
  

The original plan for today's lecture was to discuss the following things: 1) Clebsch-Gordon coefficients 2) Taking another look at the spherical harmonics (aka <math>Y_\ell^m</math>) 3) z-particle systems (I don't quite know what that means,sorry) However, we didn't get to any of these items. Instead the lecture covered two main areas: First, we went over some details about Discussion Problem #13, and second, we talked about addition of angular momenta (aka <math>\vec{J}=\vec{L_1}+\vec{L_2}</math>)

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