where e is the elementary charge and m e is the electron mass. The rotatory strengths are determined in the velocity gauge as given in the second expression and results thereby become gauge-origin independent. The transition moments for the linear momentum, p, and magnetic dipole moment, m, operators are determined as residues of the linear response function by solving the generalized eigenvalue equation in time-dependent DFT. Alternatively, the anisotropy of the decadic molar extinction coefficient can be determined directly from the complex polarization propagator evaluated for mixed electric-and magnetic-dipole operators 59