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By anyone's standards, 50 billion years is a long time.In fact, this form of dating has been used to date the age of rocks brought back to Earth from the moon.

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Carbon-14 is continually being created in the atmosphere due to the action of cosmic rays on nitrogen in the air.Well, we know this because samples of his bones and hair and even his grass boots and leather belongings were subjected to radiocarbon dating.Radiocarbon dating, also known as carbon-14 dating or simply carbon dating, is a method used to determine the age of organic material by measuring the radioactivity of its carbon content.So, radiocarbon dating can be used to find the age of things that were once alive, like the Iceman.And this would also include things like trees and plants, which give us paper and cloth.So, you might say that the 'full-life' of a radioactive isotope ends when it has given off all of its radiation and reaches a point of being non-radioactive.When the isotope is halfway to that point, it has reached its half-life.For example, with potassium-argon dating, we can tell the age of materials that contain potassium because we know that potassium-40 decays into argon-40 with a half-life of 1.3 billion years.With rubidium-strontium dating, we see that rubidium-87 decays into strontium-87 with a half-life of 50 billion years.The thing that makes this decay process so valuable for determining the age of an object is that each radioactive isotope decays at its own fixed rate, which is expressed in terms of its half-life.So, if you know the radioactive isotope found in a substance and the isotope's half-life, you can calculate the age of the substance. Well, a simple explanation is that it is the time required for a quantity to fall to half of its starting value.

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  1. Jun 26, 2014. In the article, I briefly mentioned one technique that collectors and appraisers have used to authenticate rare bottles radioactive dating. In particular, searching for trace amounts of cesium-137—a radioactive isotope that was released during nuclear weapons tests—can help resolve whether a wine was.

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