New Jersey: They developed the uranium-thorium method, the potassium-argon method, and the rubidium-strontium method, all of which are based on the transformation of one element into another. We love your photos and welcome your news tips. Make no bones about it, radiocarbon dating has transformed our understanding of the past. The currently accepted value for the half-life of 14 C is 5, years.
One of the most frequent uses of radiocarbon dating is to estimate the age of organic remains from archeological sites.
Tree rings can be counted and their radiocarbon content measured. The results ranged in age from the early 4th century BC to the mid 4th century AD.