Avatar sexchat rooms - Methods other than carbon dating

Note that, contrary to a popular misconception, carbon dating is not used to date rocks at millions of years old.

Before we get into the details of how radiometric dating methods are used, we need to review some preliminary concepts from chemistry.

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Several factors affect radiocarbon test results, not all of which are easy to control objectively.

For this reason, it’s preferable to date objects using multiple methods, rather than relying on one single test.

What would happen if a dinosaur bone were carbon dated?

- At Oak Ridge National Laboratory, Scientists dated dinosaur bones using the Carbon dating method.

The age they came back with was only a few thousand years old. And kept their theory that dinosaurs lived "millions of years ago" instead. They then use potassium argon, or other methods, and date the fossils again.

This date did not fit the preconceived notion that dinosaurs lived millions of years ago. They do this many times, using a different dating method each time.

The results can be as much as 150 million years different from each other! They then pick the date they like best, based upon their preconceived notion of how old their theory says the fossil should be .

So they start with the assumption that dinosaurs lived millions of years ago, then manipulate the results until they agree with their conclusion. So why is it that if the date doesn't fit the theory, they change the facts?

It is too soon to know whether the discovery will seriously upset the estimated dates of events like the arrival of human beings in the Western Hemisphere, scientists said.

But it is already clear that the carbon method of dating will have to be recalibrated and corrected in some cases.

Since 1947, scientists have reckoned the ages of many old objects by measuring the amounts of radioactive carbon they contain.

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