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The waters rose and increased greatly on the earth, and the ark floated on the surface of the water.
One reason is the fact that it has a radioactive isotope and second reason is that life is based on carbon compounds.
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This dating method is based on comparison of ratios of two carbon isotopes, which are C-12 and C-14. Isotopes are elements with the same atomic number, but different atomic mass numbers. By comparing the amount of radioactive carbon present now, with the amount at the beginning, an age estimate can be made, based on laws of radioactive decay.
Why was carbon chosen for the dating method, out of all the radioactive elements?
Accuracy of this dating technique is not perfect, but it has given remarkably precise results, when tested to calculate age of artifacts, whose age was known, by other methods.
It has given consistently accurate results, for varying kinds of objects.
Carbon dating is a widely used technique to determine the age of archeological objects, fossils, or any remnant from the past. The method was developed by Willard Libby and his associates, in 1949.
The impact of this technique on the world of science, led to Libby being awarded the Nobel prize in chemistry, in 1960.
Still, this changing ratio of carbon isotopes, does make a minuscule dent in the calculation accuracy.
Sample Contamination There is another possibility, which may affect the accuracy of this dating method.
They rose greatly on the earth, and all the high mountains under the entire heavens were covered.