Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Njem: Mgbalị mbụ iji mee ka mmekọrịta dị n'etiti fission na fusion bụ ihe eji eme ihe n'afọ ndị 1940 nke jikọtara fission na fusion mmanụ na mgbanwe dị iche iche. Ebe ọ bụ na ọ bụ naanị otu ihe na-eme ka ihe ahụ na-agbawa agbawa, ọ gaara esiri ya ike iji ya mee ihe. O buru ụzọ bụrụ ihe bara uru mgbe etinyere ya na nke abụọ nke ngwa agha thermonuclear nke nwere ọkwa abụọ. Aha US, Elekere Mkpu, sitere na Teller: ọ kpọrọ ya nke ahụ n'ihi na ọ nwere ike "ịkpọte ụwa" na ohere nke ikike nke Super. Aha Russia maka otu ụdị ahụ bụ ihe nkọwa: Sloika (Russian), achịcha na-eme achịcha. A nwalere Sloika Soviet nke nwere otu ọkwa na August 12, 1953. Enweghi ụdị nke US nke nwere otu ọkwa, mana Union gbara nke Operation Castle, Eprel 26, 1954, bụ ngwaọrụ thermonuclear nwere ọkwa abụọ akpọrọ Alarm Clock. Mkpụrụ ya, na Bikini, bụ 6.9 megatọn.  Ajụjụ: Olee otú ogbunigwe ahụ e ji kpachie elekere si buo ibu?
6.9 megatọn