注目の話題: 義母が好きじゃない。皆さんはどうですか？; バージンロードを1人で歩いてはいけないのでしょうか。; 不倫して心入れ替えたパートナーっています？

Let's enjoy English!

No.426　13/05/04 12:39
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【What is a half-life? 半減期】

Fortunately,or not,I've not drunken so much I expected.😚

Chemical reactions are varied.Some finish instantly as if they were an explosion of a dynamite.🔥

Others continue for a long period as though heat were generated from a body warmer 懐炉,though it's very very long term,so some are very quick,and others very slow concerning reactions of atomic nucleus.😱
　　　　　　
　　　　　　　The half-life is a kind of reactions of atomic reactions.Things change with the reaction of atomic nucleus as time passes.😃　　　　　　　　　　　　　　　As its chemical reaction advances,the things' amount of mass decrease,it'll become half amount later.We call its period the half-life. 　　　　　　　　　　　　　　　　By the way,there is a thing about which we should be careful in relation to the half-life.😃

What will happen if twice periods pass?Will the thing disappear?No!It'll become half amount in the first half-life,and it'll become half amount of the one in the first half-life in the next.😃