Harald H. Nielsen

The Vibration-Rotation Energies of Molecules

Harald H. Nielsen · Reviews of Modern Physics · 1951 · 1.2K citations

Vibronic Interaction, Engineering, Physics +7

Rotation-Vibration of Polyatomic Molecules

Gilbert Amat, Harald H. Nielsen, G. Tarrago et al. · American Journal of Physics · 1972 · 286 citations

Vibrations, Polyatomic Molecules, Molecular Mechanic +3

The low-frequency vibration rotation bands of the ammonia molecule

J. S. Garing, Harald H. Nielsen, K. Narahari Rao · Journal of Molecular Spectroscopy · 1959 · 200 citations

Molecular Spectroscopy, Natural Sciences, Spectroscopy +5

The Torsion Oscillator-Rotator in the Quantum Mechanics

Harald H. Nielsen · Physical Review · 1932 · 146 citations

Spectral Theory, Quantum Science, Engineering +10

The Rotation-Vibration Energies of Tetrahedrally Symmetric Pentatomic Molecules. I

Wave H. Shaffer, Harald H. Nielsen, L. H. Thomas · Physical Review · 1939 · 127 citations

Vibronic Interaction, Rotation-vibration Energies, Engineering +11