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And how carbon-14 dating works is there is a certain amount of carbon in most elements; in a tree, in a person, whatever it maybe and they know that carbon-14 is a special kind of carbon that decays at a rate that archeologists know.
So what they can do is compare the amount that should be in whatever they're looking at into the amount that's left and using a formula which is the exponential decay formula, they can figure out how old something is.
I can do this by working from the definition of "half-life": in the given amount of time (in this case, hours.
The trick is that we don't know how much we started with, so we can't plug in a number, so we're still left with N sub 0, we're left with e to the -.00012t, because we don't know how much we started with, we also don't know how much we ended with, but we do know we have 71% of our original amount.A child mummy is found high in the Andes and the archaeologist says the child lived more than 2,000 years ago.How do scientists know how old an object or human remains are? You probably have seen or read news stories about fascinating ancient artifacts.At an archaeological dig, a piece of wooden tool is unearthed and the archaeologist finds it to be 5,000 years old.