Dwala, deg yiseggasen n 1970 yellad anelmad deg tseddawit n Lezzayer tamaneɣt tafisikit akked tekrura, yuɣal yelmed tamaziɣt ɣer Mulud Mɛemri.deg tseddawit talemmast Lezzayer, yeḍfer tizrawin tunnigin deg taɣult n uzruran, yewwi-d agerdas n tezrawin tunnigin (DES) n tfizikt, am wakken daɣen yewwid agerdas n tsekla deg Lyun tissnat(II).