How do we determine half life for elements that have half life in billions of years

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It’s been little over 100 years since we discovered radioactivity. How then do we know the half life of elements that have half lives in hundreds plus years?

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Anonymous 0 Comments

Basically the same way I can determine roughly how many times your heart will beat in a day without measuring it all day: measure it for a short time, then multiply to scale it up to a full day.

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