注目の話題: どっちの妻がいい？; 独身、恋愛経験なし。これから何を目標に生きたらいいか？; 海外の人に原爆について教える。

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No.303　13/01/27 18:10
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【What is the radiation?】

《Kinds of the radiation》

It's said that we can defend us from the alpha ray with a piece of paper or aluminium foil,though it depends on the energy.😃

A beta ray is a flow of electron which is high speed,but its ability which penetrates a thing through isn't strong,so it's said we can protect the beta ray with a plate made of aluminium,or made of plastic.😃

As for their thickness,the plate of aluminium need to be a few mm,the plastic 1cm,however when bumping against a thing,the beta ray releases X ray,so we have to defend it.😨

While both of the alpha and beta rays are particles,gamma rays are electromagnetic waves.The gamma ray is the same kind as ultraviolet ray or X ray,but the gamma ray is higher energy and more dangerous.⚠

Its ability which penetrates a thing through is powerful because of the electromagnetic wave,so we have to defend it against with a concrete,iron,or lead 鉛.

The lead is the most effective,besides it's said its thickness need to be 10cm.👆