Hjow is radioactive dating performed
A child mummy is found high in the Andes and the archaeologist says the child lived more than 2,000 years ago.How do scientists know how old an object or human remains are?After all, textbooks, media, and museums glibly present ages of millions of years as fact.Yet few people know how radiometric dating works or bother to ask what assumptions drive the conclusions. You probably have seen or read news stories about fascinating ancient artifacts.
It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
In some cases, the isotopes eject particles, primarily neutrons and protons.
(These are the moving particles measured by Geiger counters and the like.) The end result is a stable atom, but of a different chemical element (not carbon) because the atom now has a different number of protons and electrons.
What methods do they use and how do these methods work?
In this article, we will examine the methods by which scientists use radioactivity to determine the age of objects, most notably carbon-14 dating.