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Radioactive dating methods beyond 60000 years

It’s a little like bouncers throwing trouble-makers out of a dance club.The process happens with some mathematical regularity.Mathematics allows to predict half-lives, some of which are millions of years.To demonstrate, let us suppose we have a sample of 1000 nickels.If we pretend we can have fractions of coins, after two minutes, we would have 750-187.5, or 562.5 nickels and 437.5 pennies.We can tabulate the results to get a sense of the “history” of the decay.This instability results in what we conveniently call radioactivity.

If we had started with 2000 nickels, after 24 minutes we would have two nickels and after 26.4094 minutes we have have just one nickel.

Each nucleus is in constant turmoil, as protons and neutrons dance around each other, subject to forces beyond their control.

Protons try to repel each other, since they share the same positive electical charge.

Radioactive dating is one of the primary tools of science.

Geologists, biologists, paleontologists and archaelogists, among others, depend on radiometric analysis to place their discoveries chronologically.

614 comments

  1. How Carbon-14 Dating Works. it is only reliable for dating objects up to about 60,000 years. Potassium-40 is another radioactive element naturally found in.

  2. Most of the chronometric dating methods in use today are radiometric. Beyond 40-50,000 years. dates older than 60,000 years are still rare.

  3. Why is radioactive or Carbon 14 dating only accurate for 60,000 years? In theory, there should always be at least SOME Carbon 14 in everything that was living at any.

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