Enter the half-life into the calculator to determine the decay constant, also known as the decay rate.
Decay Constant Formula
The following formula is used to calculate the decay constant.
λ = ln (2) / t1/2
- Where λ is the decay constant (s^-1)
- Where t1/2 is the half-life (seconds)
A decay constant is the proportionality between the total size of a number and the rate of decay. This is most often used in physics when analyzing elements that undergo radioactive decay.
Decay Constant Example
How to calculate decay constant?
- First, determine the half life.
The half life is the total time it takes for the population or amount to diminish to 1/2 it’s original size.
- Next, calculate the decay constant.
Using the formula above, plug in the half life.
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