Normal Mode Coordinate
From MaRDI portal
Available identifiers
WikidataQ112730947 ScholiaQ112730947MaRDI QIDQ6674076
pattern of motion in which all parts of the system move sinusoidally with the same frequency and with a fixed phase relation
Normal coordinates refer to the positions of atoms away from their equilibrium positions, wrt a normal mode of vibration. Formally, normal modes are determined by solving a secular determinant, and then the normal coordinates can be expressed as a summation over the cartesian coordinates (over the atom positions). The normal modes diagonalize the matrix governing the molecular vibrations.
Related URL
https://en.wikipedia.org/wiki/Normal_mode
https://en.wikipedia.org/wiki/Molecular_vibration#Normal_coordinates
