User:Saidrago

Testing math stuff:

Half-life equations:
 * $$N_t/N_0 = \left(\frac {1}{2}\right)^{t/t_{1/2}}$$

$$t = t_{1/2}{\log (N_t/N_0) \over \log \frac {1}{2}}$$ or $$t = t_{1/2}{\log (N_0/N_t) \over \log 2}$$