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Why radioactivity is exponential?

Updated: 11/20/2022
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13y ago

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The number of atoms that decay in a certain time is proportional to the amount of substance left. This naturally leads to the exponential function. The mathematical explanation - one that requires some basic calculus - is that the only function that is its own derivative (or proportional to its derivative) is the exponential function (or a slight variation of the exponential function).

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Q: Why radioactivity is exponential?
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