kwɑːdɹˈæɾɪk mæɡnˈɛɾɪk ɹoʊtˈeɪʃən ˈɔːlsoʊ nˈoʊn æz kjˌuːˌɛmˈɑːɹ ɔːɹ kjˌuːˌɛmˈɑːɹ ɪfˈɛkt ɪz ɐ tˈaɪp ʌv mæɡnˈiːɾoʊˈɑːptɪk ɪfˈɛkt, dɪskˈʌvɚd ɪnðə mˈɪd nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi z baɪ ɐ tˈiːm ʌv juːkɹˈeɪniən fˈɪzɪsˌɪsts.
Quadratic magnetic rotation (also known as QMR or QMR effect) is a type of magneto-optic effect, discovered in the mid 1980s by a team of Ukrainian physicists.