注目の話題: 離婚し30年会ってない父親に会う場合; どっちの妻がいい？; 女性の友達ってどうやって作れば良いですか？

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No.332　13/02/15 20:53
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【How much is the radiation in the natural world?】

《Cosmic rays in the atmosphere or food.》

There is the radiation in the atmosphere.Its origins are varied,and some of them are the ones which generated when the cosmic rays bumped against the atmosphere.🌌

They are a kind of hydrogens,三重水素,H3,and a kind of carbons,C14.Those chemical elements drift into the air,or the hydrogen becomes water,and the carbon is absorbed in various food.😃

We usually drink the water and eat the food,so it means we are always exposed to the radiation in the body.😃

Besides,there are a variety of radioactive elements,it means kinds of radioactive materials,in the earth's core 地殻.🌏

The radioactive elements are potassium40 カリウム,rubidium87,polonium210,lead210.Uranium and radium are also the radioactive elements.😃

By the way,I don't have enough expertise to express the radioactivity.I'm just an amateur,though I've tried to understand and to express the radioactivity by myself in English.😚