注目の話題: 喧嘩した後のコミュニケーションを教えていただけませんか。; 家出したいです。; スパゲティの分け与え

A diary of a heretic in English

No.314　11/07/02 22:00
ｽﾁｬﾗｶ一郎 ( 50代 ♂ Oe38xe ) あ+あ-

【The difference among radiation,radioactivity and radioactivity materials】

We can't see radiation with our own eyes. Unless being under lots of the radiation,neither we can feel,hear nor smell it,but it is said it's bad for our health.😣

All the substances in this university are made up with varied atoms.There is an atomic nuclear which is made up with some protons 陽子 and 中性子 neutrons in the center of the atom. Some electrons are circling around the atomic nuclear.😃

As to the numbers of the protons and neutrons in the atom, it's usually limited, but there are some atoms of which the number of the neutron is different from the others.We call them 同位体.😃

For instance,almost all of the atomic nuclear of carbon is made up with six protons and six neutrons, we call it carbon 12,but there are some other carbon 13 and carbon 14.😃

The former,the carbon 13 is made up with 6 protons and 7 neutrons and the latter is with 6 protons and 8 neutrons.😃