Geological Time: Exponential Decay

Radioactive Equations

We start with:

Equation 1

Integrating by separating the variable:

Equation 2

If Equation 3, then t is the half-life, tHL

Equation 4

Where N0 is the original amount of radioactive material, N is the amount of radioactive material at time t, Lambda is the radioactive decay constant. tHL is the half-life