Icyuma gifata icyuma gikozwe mubiti byiza bikozwe mubiti, bikomeye, biramba kandi birinda ibidukikije, kora igikoni kibisi kandi cyiza kumazu yawe.Igishushanyo mbonera cya magnetiki yububiko bwa cyuma.Ubugari bwa plaque ya magnetique, ultra nini ubushobozi bushobora gushyirwaho ibintu byinshi.