The geological time scale and an age for the Earth of 4.5 b.y.
reaches millions of people each year–many of these aren't believers in our Creator and Savior Jesus Christ.
Radiocarbon dating is one such type of radiometric dating.
magazine has been continuously published since 1978, we are publishing some of the articles from the archives for historical interest, such as this.
The only problem is that we only know the number of daughter atoms now present, and some of those may have been present prior to the start of our clock. The reason for this is that Rb has become distributed unequally through the Earth over time.
The object's approximate age can then be figured out using the known rate of decay of the isotope.
For organic materials, the comparison is between the current ratio of a radioactive isotope to a stable isotope of the same element and the known ratio of the two isotopes in living organisms.
His Ph D thesis was on isotope ratios in meteorites, including surface exposure dating.
He was employed at Caltech's Division of Geological & Planetary Sciences at the time of writing the first edition.