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Posted by / 31-Jan-2017 16:33

Why how carbon 14 dating done

So, we have a “clock” which starts ticking the moment something dies.Obviously, this works only for things which were once living.Carbon-14, or radiocarbon, is a naturally occurring radioactive isotope that forms when cosmic rays in the upper atmosphere strike nitrogen molecules, which then oxidize to become carbon dioxide.Green plants absorb the carbon dioxide, so the population of carbon-14 molecules is continually replenished until the plant dies.Carbon-14 is also passed onto the animals that eat those plants.After death the amount of carbon-14 in the organic specimen decreases very regularly as the molecules decay.But when it dies, this ratio will fall, as the carbon-14 decays.Radioactive carbon decays slowly, such that a given amount of carbon-14 halves every 6,000 years.

I agree that samples can be found which are not dead, however, in highlighting these samples and trumpeting them to their followers, they ignore the other samples which are dead.

Briefly, normal carbon is carbon-12 (C atoms are incorporated, along with normal carbon atoms, into the cellulose structure of plants and trees, and they also enter into the tissues of animals.

When a plant or animal dies, no more carbon is added.

HOW THE METHOD WORKS De Young starts out with an explanation of how carbon dating works.

One can get a similar explanation on the web by reading Carbon Dating from the Wikipedia website.

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C in the dead sample, and using the half-life, one can determine the age of the sample, or, the age at which it stopped incorporating new carbon into its cells. Thus, his noted carbon-14 result is that C production later in this chapter, but he does not deal with all of them.