10/14/2023 0 Comments Half life formula![]() ![]() ![]() It might be wondering if some, is there's any radioactive on this earth constantly spontaneously decaying how do we actually still have radioactive isotopes if our earth is billions millions of years old? Well actually they take a long time for things to decay doesn't happen instantly sometimes it does but sometimes they happens every millions of years such as uranium takes milli- the half life of uranium takes millions of years meaning that when the year started we had a certain amount and now we had after 4.5 I think billion years and million years it's half of the volume uranium is actually left on this earth so what do I mean by half life? So half life is the time required for half of the radioisotopes nuclei to decay.
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