Main mma:
Extra elu echebe arụmọrụ, ala-eguzogide, echebe electromagnetic mmiri na ebili mmiri, mgbochi radieshon, iwepụ static ọkụ eletrik, elu ikuku permeability, owu n'akụkụ nwere ike na-emetụ akpụkpọ.
Ngwa:
Ihe zuru oke maka ikpuchi, uwe mgbochi radieshon, uwe, ngwa na akwa ụlọ; conductive ngwaahịa, mgbochi static ngwaahịa.
