In the 17th and 18th centuries, scientists increasingly sought to formulate knowledge in terms of physical laws.
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.
Lane, geology professor at Tufts University, as chairman.
The Committee first met in December 1923 and then began publishing in "Annual Reports," reviewing and discussing all the papers on radiometric dating during each successive year, continuing until 1955 or so.
However, rocks and other objects in nature do not give off such obvious clues about how long they have been around.
So, we rely on radiometric dating to calculate their ages.
The dating of rocks by the radioactive decay of certain minerals is undoubtedly the main argument today for the dogma of an old earth.