mutual orientation of L and S - hyperfinecourse

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November 13, 2025 at 11:13 am #6727

AntoineF
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When J=2, we have J=L+S which means L and S are parallel and pointing in the same direction.
For J=1, we have L and S perpendicular to each other, only one contributes to J.
For J=0, we have L and S parallel and pointing in opposite directions, as there contributions sum up to 0.
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