/ Direct numerical diagonalization (DND)  Rus | Eng  Physics Optics Spectroscopy .. Up Molecular spectroscopy Top level categories All types Undefined Object Process Schema Script Juncture Participation Description History Structure Situation Reason Purpose in current section in all sections Direct numerical diagonalization (DND) (@2019) Direct numerical diagonalization (DND) [Rus.] DND is an adaptation of the well-known variational method for solving the quantum mechanical equations of the rovibrational molecular Hamiltonian. Type: Script related to sections: / Physics / Optics / Spectroscopy / Molecular spectroscopy / Determination of the physical characteristics of an isolated molecule