Up to now we have discussed molecules changing their vibrational quantum number by +1. (realclimate.org)
Current suppression in a small magnetic field can ultimately be traced back to the famous Pauli exclusion principle, the quantum mechanical principle that states that no two electrons (fermions) may have identical quantum numbers. (sciencedaily.com)
The question of how many quantum numbers are needed to describe any given system has no universal answer, although for each system one must find the answer for a full analysis of the system. (sciencedaily.com)