- #1
Acid92
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According to my textbook, the decay constant is the probability that a radionuclide will decay in any second (hence the unit s^-1) and so the total number of radionuclides decaying at any second, i.e. the activity, is λN but this is also the rate of change of N thus
dN/dt = -λN
Surely dN/dt can't be a differential since λN is the number of radionuclides decaying in a time interval of 1 second and not an instant?
dN/dt = -λN
Surely dN/dt can't be a differential since λN is the number of radionuclides decaying in a time interval of 1 second and not an instant?