 What city was the birthplace of the German physicist for which Hund's coupling cases in the spectroscopy of diatomic molecules are name for?
Karlsruhe
Title: Hund's cases
Passage: In rotational-vibrational and electronic spectroscopy of diatomic molecules, Hund's coupling cases are idealized cases where specific terms appearing in the molecular Hamiltonian and involving couplings between angular momenta are assumed to dominate over all other terms.  There are five cases, traditionally notated with the letters (a) through (e).  Most diatomic molecules are somewhere between the idealized cases (a) and (b).
Title: Mark Douglas Havey
Passage: Mark Douglas Havey from the Old Dominion University, was awarded the status of Fellow in the American Physical Society, after they were nominated by their Division of Atomic, Molecular & Optical Physics in 1998, for "development and explication of novel one- and two-photon spectroscopies of bound and dissociative electronic states of diatomic molecules; also for development of precision atomic two-photon polarization spectroscopy for determination of atomic matrix elements and novel sum rule."
Title: Friedrich Hund
Passage: Friedrich Hermann Hund (4 February 1896 – 31 March 1997) was a German physicist from Karlsruhe known for his work on atoms and molecules.
Hund's cases Friedrich Hund