The scientists proved that carbon-14, which is present in our atmosphere as carbon dioxide, is absorbed by plants, animals, and human beings at a constant rate, and that the amount of carbon-14 is stabilized at a specific amount.
Carbon has three main isotopes, which are carbon-12, carbon-13, and the remarkable carbon-14.
Since carbon-14 is the most radioactive, it is the radioactivity that is used to measure age and date plant-based artifacts.
Then, at the moment the living organism dies, it stops taking in any carbon-14, and the carbon-14 remaining in the organism starts to disintegrate at the half-life rate of 5,568 years (Poole 19).
(Today, based on refined calculations/techniques the half-life rate of carbon-14 is generally considered to be 5,730 years) (Wheatley 20; De Young 20).
A physical chemist named Willard Frank Libby discovered carbon-14 dating in the year 1949 and had won the Noble Prize in Chemistry for his great discovery.
In 1947, Willard first proposed his idea of carbon-14 dating but hadn't perfected the process until after twelve years of research.
If there are two extra neutrons in carbon's element then the atomic mass will increase by two as well.
This change in atomic mass is what makes carbon an isotope and changes carbon's name to carbon-14.
Archaeologists utilize several methods to analyze data from the past.
One scientific tool helps to analyze the radioactive decay of chemical elements found in plant and animal remains, pottery, and even rocks.
His research was finally complete in the year 1959.