Nuclear fission – the physical process by which very large atoms like uranium split into pairs of smaller atoms – is what makes nuclear bombs and nuclear power plants possible. But for many years, ...

It will take time to see the actual effects of the Iran nuclear deal negotiated this weekend. One of the terms of the agreement is a delay in the development of a heavy water reactor in Arak ...

Atoms are very small. They have a radius of around 1 × 10 10 metres. This symbol shows that chlorine has 35 particles in the nucleus (protons and neutrons), 17 of which are protons. It also tells ...