Carbon dating意思

"Carbon dating" is a technique used to determine the age of organic materials by measuring the amount of radioactive carbon-14 they contain. Carbon-14 is a naturally occurring radioactive isotope of carbon that decays over time. By measuring the ratio of carbon-14 to non-radioactive carbon-12 in a sample, scientists can estimate the age of the sample. This method is widely used in fields such as archaeology, geology, and paleontology to date materials that are up to about 50,000 years old.