Carbon 12 dating
Exponential Decay Formula: A = A" is the original amount of the radioactive isotope that is measured in the same units as "A." The value "t" is the time it takes to reduce the original amount of the isotope to the present amount, and "k" is the half-life of the isotope, measured in the same units as "t." The applet allows you to choose the C-14 to C-12 ratio, then calculates the age of our skull from the formula above.
Radio carbon dating determines the age of ancient objects by means of measuring the amount of carbon-14 there is left in an object.
Libby and coworkers, and it has provided a way to determine the ages of different materials in archeology, geology, geophysics, and other branches of science.
Some examples of the types of material that radiocarbon can determine the ages of are wood, charcoal, marine and freshwater shell, bone and antler, and peat and organic-bearing sediments.
In the following section we are going to go more in-depth about carbon dating in order to help you get a better understanding of how it works.
Each sample type has specific problems associated with its use for dating purposes, including contamination and special environmental effects.
More information on the sources of error in carbon dating are presented at the bottom of this page.
The method was developed immediately following World War II by Willard F.
Libby and coworkers and has provided age determinations in archeology, geology, geophysics, and other branches of science.