Radioactive Dating . BioNinja

Re - Radiometric Dating Debunked in 3 Minutes

Radiometric dating is a means of determining the "age" of a mineral specimen by determining the relative amounts present of certain radioactive elements. By "age" we mean the elapsed time from when the mineral specimen was formed. Radioactive elements "decay" that is, change into other elements by "half lives. The formula for the fraction remaining is one-half raised to the power given by the number of years divided by the half-life in other words raised to a power equal to the number of half-lives. If we knew the fraction of a radioactive element still remaining in a mineral, it would be a simple matter to calculate its age by the formula. To determine the fraction still remaining, we must know both the amount now present and also the amount present when the mineral was formed. Contrary to creationist claims, it is possible to make that determination, as the following will explain:.

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Potassium-Argon Dating Methods: K-Ar and Ar-Ar Dating

Radiometric or Absolute Rock Dating

Potassium—argon dating , abbreviated K—Ar dating , is a radiometric dating method used in geochronology and archaeology. It is based on measurement of the product of the radioactive decay of an isotope of potassium K into argon Ar. Potassium is a common element found in many materials, such as micas , clay minerals , tephra , and evaporites. In these materials, the decay product 40 Ar is able to escape the liquid molten rock, but starts to accumulate when the rock solidifies recrystallizes. The amount of argon sublimation that occurs is a function of the purity of the sample, the composition of the mother material, and a number of other factors. Time since recrystallization is calculated by measuring the ratio of the amount of 40 Ar accumulated to the amount of 40 K remaining.

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8 Signs You’re Ready To Date Again After A Bad Breakup

LIFE AFTER A BREAKUP + DATING FOR THE FIRST TIME - GIRL TALK

I've always been confused about those people who are constantly in relationships. You know what I mean. That one girl from high school who was posting a million pictures with the same guy, complete with sappy captions and millions of heart emojis, until she suddenly started posting the same captions on photos with a new guy. How did she do it? How did she move on so quickly?

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