is a technique used by scientists to learn the ages of biological specimens – for example, wooden archaeological artifacts or ancient human remains – from the distant past.
It can be used on objects as old as about 62,000 years.
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From this science, we are able to approximate the date at which the organism were living on Earth.
Radiocarbon dating is used in many fields to learn information about the past conditions of organisms and the environments present on Earth.
The boat of a pharaoh was discovered in a sealed crypt and reassembled in a museum near the pyramids (see Fig. The age of our galaxy and earth also can be estimated using radioactive dating.
Using the decays of uranium and thorium, our galaxy has been found to be between 10 and 20 billion years old and the earth has been found to be 4.6 billion years old. Within experimental error, this estimate agrees with the 15 billion year estimate of the age of the Universe.
Once an organism is decoupled from these cycles (i.e., death), then the carbon-14 decays until essentially gone.