A report about the decay and half-life of different radioactive elements. It is impossible to predict when any one atom will decay but by looking at a number of atoms an average rate of decay can ...

A spontaneous process means that it is not possible to say which particular nucleus will decay ... when half the unstable nuclei in a sample will have decayed. This is called the half-life.

After what feels like eons of waiting, the Half-Life 2 RTX demo is finally here ... old games you can play today alongside some big single-player games to try as well. You can follow us on ...