注目の話題: ピアノが弾けるは天才; コンビニ店員、怖い; 娘がビスコ坊やに似てると言われました

Let's enjoy English!Ⅱ

No.143　13/10/18 19:35
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【A fuel rod is made of mass of uranium.】

《Uranium's property》

Uranium's specific gravity 比重 is 19.1.It's larger than iron 7.9,lead 11.4 or mercury 13.5,and is super massive metal which is match for gold '19.3 or platinum 21.5.Needless to say,the number is the specific gravity.😃

By the way,what's the specific gravity?☝

The specific gravity is proportion between mass of a matter and other mass of other matter.Then both of cubic volume 体積 is same.😃

The uranium used to be adopted for a camera in which a film was used.We also used it for uranium gas as raw material.📷

It releases subtle radiation,but it's said its chemical poisonous as a heavy metal is more dangerous than the radiation.⚠

【A control rod which controls a number of neutrons】

A number of neutrons plays an important part on the chain reaction of atomic fission.If it's little,it'll bring to an end to a reaction of the nuclear fission,and the fire in the atomic reactor go out.😩