Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Ụzọ: Salomon August Andrée kwenyesiri ike n'ihe ndị a, ma tụọ aro ka e mee atụmatụ ka ifufe mee ka bọmbụ e ji mmiri hydrogen eme ihe si Svalbard gafee Oké Osimiri Arctic gaa n'Oké Osimiri Bering, iji rute Alaska, Canada, ma ọ bụ Russia, ma gafee n'akụkụ ma ọ bụ ọbụna kpọmkwem n'elu Ugwu Ugwu n'ụzọ. Andrée bụ onye injinia n'ụlọ ọrụ na-ahụ maka ihe ndị e mepụtara emepụta na Stockholm, ọ na-enwekwa mmasị dị ukwuu n'ịgba bọl.  Ajụjụ: Olee ogidi e chere na bọlb ahụ ga-agafe?
Ugwu Ugwu