Half-life
The time in which half of a sample decays — a constant of the nuclide that nothing outside the nucleus can change — and the arithmetic of halving that follows from it.
About 35 minutes7 activities Paper packet
The time in which half of a sample decays — a constant of the nuclide that nothing outside the nucleus can change — and the arithmetic of halving that follows from it.
About 35 minutes7 activities Paper packet