Well, they're in there, but only in the very center. That's called the nucleus.

们又在哪里呢？别，们还是在那里，不过只在正中间一点点地方。所以们被称为原。

To get some answers, physicists look at neutrinos, fundamental particles emitted during nuclear reactions.

为了得到答案，物理学家瞄向了中微——在原反应中射出的基础粒。

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

每一种元素的原周围都有一定数量的。

An atom's nucleus has a positive charge.

原带正荷。

Around 90% are protons, 9% are helium nuclei, and 1% are heavier nuclei.

约 90% 是质， 9% 是氦， 1% 是较重的原。

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

每个原都由原，以及围绕的云组成。

It's not in a nucleus at all.

根本不在原里。

Outside the nucleus are electrons which have a negative charge.

原外面是带负荷的。

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

汤普森在这发现了，瑟福在这分裂出了原。

What's holding those electrons around that nucleus is going to be Coulomb's Law.

是什么让这些围绕那个原, 这就是库仑定律。

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

原的中心是的原，带有正荷。

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

具体地说，原比原小十万倍。

Mister Lawrence had won the Nobel Prize in nineteen thirty-nine for his work in nuclear physics.

劳伦斯先生因其在原物理学方面的贡献获得了1939年的诺贝尔奖。

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

一种元素的原序数是其原中的质数。

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

裂变是指一个原分裂成两个大致相等的原的过程。

Streaming out of a nuclear reactor of course!

当然得出现一个原反应！

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原。

Electrons orbiting the nucleus have a negative charge.

围绕原运行的带负荷。

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

原和之间的动力将原固定在一起。

To free electrons, something has to make them whirl fast enough to break away from their nuclei.

为了释放，必须使高速旋转而足以摆脱原的束缚。