It takes another 4,460,000,000 years for half of the remaining sample to decay into Pb206 and then another 4,460,000,000 years for half of what’s then left to decay, and so on.The time it takes for half of a sample to decay is called a “half-life.” By measuring radioactive half-lives, by measuring how much parent and daughter are present in any given specimen, and by making certain key assumptions, scientists believe they are able to accurately determine the age of a specimen. The question is what are the underlying key assumptions and how reliable are they?A related article on the age of the earth and geologic ages presented the current best known values for these dates: Ages.The figures shown in that article are based on radiometric dating. So we have to rely on something called radiometric dating to figure out the age of rock.Because these rates do not change and because the radiation that rocks give off can be measured, it became possible to calculate the time the rock was formed or, in other words, the rock's birth date - give or take a few thousand years or so.He was employed at Caltech's Division of Geological & Planetary Sciences at the time of writing the first edition.He is presently employed in the Space & Atmospheric Sciences Group at the Los Alamos National Laboratory.
In fact, you might like this term better, because the dating method relies on the known decay rate of radioactive isotopes.
Question: "How does radiometric dating fit with the view of a young earth?
" Answer: Radiometric dating does not fit with the “young earth” view.
Regardless of which name you prefer, the discovery was a true breakthrough that provided a tool to predict the geological history of the Earth and even the age of the Earth itself.
To better understand how radiometric dating helps us determine the age of rocks, it will help us to gain a better understanding of how elements decay.