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How do you calculate the half life of carbon 14?

1 Answer
Nov 22, 2014

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.