| http://www.w3.org/ns/prov#value | - The vanishing of \(\vec L\cdot \vec A\) can be seen again classically ??? where it means that the angular momentum is orthogonal to the plane of orbit (that includes the focus-perihelium direction) ??? but it generalizes to the quantum theory: all ordering problems and other terms that are subleading in the \(\hbar o 0\) limit go away.
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