日本最坏情况~如冰岛火山大爆发~把大量放射尘射到平流层

日本最坏情况~如冰岛火山大爆发~把大量放射尘射到平流层

但能量~从何而来/ok~~~
簡單是真理的標誌,美是真理的光暉。數學是理性之光!http://you.video.sina.com.cn/fshuo1972
Hope the nuclear nod won't reach to the critical point and explore afterhead.
I mean explosion after it reaches to critical point.

日本最坏情况~如冰岛火山大爆发~把大量放射尘射到平流层

接着全球大循环~~睇下边到~中标~~
簡單是真理的標誌,美是真理的光暉。數學是理性之光!http://you.video.sina.com.cn/fshuo1972
I mean explosion after it reaches to critical point.
conanmaths 發表於 18-3-2011 11:50
Reaching critical point does not mean it will go in a rapid chain reaction like that in a nuclear bomb. For the chain reaction to happen so quick, the ingredients need to be exactly right and the shape needs to be exactly correct. If not engineered it is almost impossible to obtain such a condition.

Typical uranium concentration of fuel rods in a reactor is only 2%, weapons grade is least 4%. This lowered concentration alone is enough to make it impossible to go into a nuclear explosion.
釋放劉曉波!