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Just as in the example with uranium, scientists are able to determine the age of a sample by using the ratios of the daughter product compared to the parent.

Also, when dating with carbon-14, scientists compare the amount of carbon-14 to carbon-12.

Isotopes decay at a constant rate known as the half-life.

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The isotope doesn't actually deteriorate; it just changes into something else.Radiocarbon dating was used to identify a forged painting based upon the concentrations of carbon-14 detected on the canvas within the atmosphere at the time that the picture was painted.So, to sum this all up, radioactive dating is the process scientists use to conclude the ages of substances dating back several to many years ago by using the isotopes of elements and their half-lives.Absolute age is just a fancy way of saying definitive or specific age as opposed to the relative age, which only refers to how old or young a substance is in comparison to something else.To illustrate, let's use the isotope uranium-238, which has a half-life of 4.5 billion years.

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