注目の話題: 妻の過去について; ☆ダブル不倫15☆; 皆さんは精神科受診についてどう思いますか？

Let's enjoy English!Ⅱ

No.42　13/08/14 07:25
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【Is the criticality a terrible phenomenon?】　　　　　　　　　　　　　　　　　　　　　　　　《The amount of the criticality has decreased》

To make matters worse,it's said that the research has made the amount of the criticality less in order to create an atomic bomb.Roughly speaking,it's 3 Kilograms with regard to uranium 235,1 kilograms concerning plutonium 239.🔥

【How do we measure the amount of the criticality?】

There are two ways so as to recognize real nature of matter.😃

The one is we estimate it with a theoretical method of computing.The other is we make an experiment actually.The amount of the criticality is the latter.It was measured with a concrete experiment.😃

《An experiment of the amount of the criticality》

The amount of the criticality is the one in which fissionable material 核分裂可能物質 starts to the chain reaction actually.How do we measure it?If reaching the amount of the criticality,it'll be dangerous extremely.😨