kənsˌɪdɚɹˈeɪʃənz ʌvðə sˈɪmətɹi ʌvðə mˈiːdiːə, lˈaɪt ænd ˈæksɪəl vˈɛktɚɹ ʌvðə mæɡnˈɛɾɪk fˈiːld fɚbˈɪd kjˌuːˌɛmˈɑːɹ ɪn nˈɑːnmæɡnˈɛɾɪk ɔːɹ mæɡnˈɛɾɪkli dɪsˈoːɹdɚd mˈiːdiːə.
Considerations of the symmetry of the media, light and axial vector of the magnetic field forbid QMR in non-magnetic or magnetically disordered media.