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Another fascinating example is the Shroud of Turin (you might check this out on the Internet).
It is believed by some to have covered Jesus when he was in the tomb.
For older items, isotopes of potassium have been used.
PART 1: Back to Basics PART 2: Problems with the Assumptions PART 3: Making Sense of the Patterns This three-part series will help you properly understand radiometric dating, the assumptions that lead to inaccurate dates, and the clues about what really happened in the past.
The proportion of potassium to argon suggests how old the object in question is.
Radioactive dating refers to the process of measuring the age of an object using the amount of a given radioactive material it contains.
A couple of wonderful examples have been in the news in the past years.
When bone fragments are found that are believed to be human or human-like, carbon-14 dating is often used to determine the approximate age of the remains.
Carbon dating uses the carbon-14 isotope, with a half life of about 5700 years.
Carbon dating has the peculiar property that it works primarily on dead things.Other forms of radioactive dating are more broadly applicable.