The atoms of some chemical elements have different forms, called isotopes.These break down over time in a process scientists call radioactive decay.It has become increasingly clear that these radiometric dating techniques agree with each other and as a whole, present a coherent picture in which the Earth was created a very long time ago.Further evidence comes from the complete agreement between radiometric dates and other dating methods such as counting tree rings or glacier ice core layers.
Many are also unaware that Bible-believing Christians are among those actively involved in radiometric dating.
The potassium-argon dating method has been used to measure a wide variety of ages.
The potassium-argon age of some meteorites is as old as 4,500,000,000 years, and volcanic rocks as young as 20,000 years old have been measured by this method.
As we have mentioned before each radioactive isotope has its own decay pattern.
Not only does it decay by giving off energy and matter, but it also decays at a rate that is characteristic to itself.
He was employed at Caltech's Division of Geological & Planetary Sciences at the time of writing the first edition.