Advantages and disadvantages of carbon 14 dating
But now archaeologists studying, say, the development of agriculture across the continents are able to determine how different societies stacked up against one another throughout the millennia.
"Everything which has come down to us from heathendom is wrapped in a thick fog; it belongs to a space of time we cannot measure.
Thus, one carbon 14 atom exists in nature for every 1,000,000,000,000 C12 atoms in living material.
The radiocarbon method is based on the rate of decay of the radioactive or unstable carbon isotope 14 (14C), which is formed in the upper atmosphere through the effect of cosmic ray neutrons upon nitrogen 14.
There are three principal isotopes of carbon which occur naturally - C12, C13 (both stable) and C14 (unstable or radioactive).
These isotopes are present in the following amounts C12 - 98.89%, C13 - 1.11% and C14 - 0.00000000010%.
Prior to the development of radiocarbon dating, it was difficult to tell when an archaeological artifact came from.
And lastly, the ratio of C-14 to C-12 in the atmosphere (and hence the ratio in organic remains) has fluctuated to a certain extent over the millennia, something that can lead to misleading discrepancies that need to be corrected for.The excavator might employ relative dating, using objects located stratigraphically (read: buried at the same depth) close to each other, or he or she might compare historical styles to see if there were similarities to a previous find.But by using these imprecise methods, archeologists were often way off.For the most part, radiocarbon dating has made a huge difference for archaeologists everywhere, but the process does have a few flaws.For example, if an object touches some organic material (like, say, your hand), it can test younger than it really is.