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QUESTION

# How do you calculate the half life of carbon 14?

A quick way to calculate Half-Life is to use the expression:

t_((1)/(2)) = (0.693)/(lambda)

Where lambda is the decay constant and has the value of

1.21 x 10^(-4) yr^(-1)

So t_((1)/(2))=(0.693)/((1 .21).(10^(-4))

t_((1)/(2)) = 5.73 x 10^(3) yr

Let me know if you would like the derivation of this.