Radioactive decay

Radioactive decay is governed by the decay law:

$N=N_0\left(\tfrac{1}{2}\right)^{t/T}$

where $N_0$ is the initial number of nuclei, $T$ is the half-life (the time after which half of the nuclei decay), and $t$ is time. After each $T$ half remains: after one $\tfrac12$, after two $\tfrac14$, after three $\tfrac18$…

Enter $N_0$, $T$ and $t$ (in the same time units) — the calculator finds the number and percentage of remaining nuclei and draws the decay curve.