Fission refers to the process where one nucleus splits into two roughly equal nuclei.

裂变是指一个分裂成两个大致相等的的过程。

An atom's nucleus has a positive charge.

正荷。

In fission, the splitting of a nucleus generates energy.

在裂变中，分裂产生能量。

Electrons orbiting the nucleus have a negative charge.

围绕运行的荷。

Outside the nucleus are electrons which have a negative charge.

外是荷的。

In fact, it's about a hundred thousand times smaller.

具体地说，比小十万倍。

At the center of an atom is its nucleus which has a positive electric charge.

的中心是它的，它有正荷。

In fusion, light nuclei merge — or " fuse" — to form one heavier nucleus.

在聚变过程中，轻的合并——或者“聚变”——形成一个较重的。

Every element has a specific number of electrons surrounding the nucleus.

每一种元素的周围都有一定数量的。

The electric force between the nucleus and the electrons holds the atom together.

和之间的动力将固定在一起。

The type of atom depends on how many protons it has in the nucleus.

的类型取决于其中有多少质。

An element's atomic number is the number of protons in its nucleus.

一种元素的序数是其中的质数。

This is where J.J. Thomson discovered the electron, and where Rutherford split the atom.

汤普森在这发现了，卢瑟福在这分裂出了。

An atom's nucleus is surrounded by a cloud of orbiting electrons.

的周围环绕着一团按轨道运行的群。

In a metal atom, the outermost electrons are only weakly attached to the nucleus.

在金属中，最外层与连接微弱。

Streaming out of a nuclear reactor of course!

当然得出现一个反应！

Unlike the graceful motion of planets, the atomic nuclei are chaotic blurs.

和优雅地移动的行星不同，是很混乱的。

Atoms consist of an atomic nucleus surrounded by a cloud of electrons.

每个都由，以及围绕它的云组成。

And iron is the first nucleus where you don't get any energy out of fusing it.

而铁是第一个不能从聚变中获取能量的。

And the nucleus is incredibly tiny compared tothe overall size of the atom.

尽管与整个相比，小得不可思议。