The property of some materials by which individual atoms decay, emitting energy or particles often transforming into different elements in the process.
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Since radioactive material decays how is it possible that there is any left after 4.5 billion years?How do we know that C14 decay is exponential and not linear?
How do we know that some radioactive materials have a half life of millions or even billions of years?
Since radioactive material decays how is it possible that there is any left after 4.5 billion years?
Is there any thing other than time that “triggers” a radioactive atom to decay?
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