Founder of carbon dating

What methods do they use and how do these methods work?

How do scientists know how old an object or human remains are?Atoms of the same element that have different numbers of neutrons are called isotopes. Most carbon on Earth exists as the very stable isotope carbon-12, with a very small amount as carbon-13.Here’s an example using the simplest atom, hydrogen. Carbon-14 is an unstable isotope of carbon that will eventually decay at a known rate to become carbon-12.Among the artifacts from the University of Chicago’s Oriental Institute that Prof.Willard Libby tested during the radiocarbon dating development process was this wood from an ancient Egyptian coffin.