Carbon dating and reliability
As the lecture detailed, it is only accurate from about 62,000 years ago to 1,200 A. There is a sizable amount of time before and after that period that cannot be investigated using this method.
Also, archaeologists cannot use their hands to touch the samples or smoke near them.
However, a new study from the Imperial College London suggests that fossil fuel carbon emissions may be so diluting radioactive carbon isotopes that within decades it will difficult to differentiate between modern artifacts and those over a thousand years old.
It may conjure up a very odd mental picture, but every living thing on Earth has its own internal clock that's ready to start ticking the moment it dies.
And that's what the American physical chemist Willard Libby won the Nobel Prize for when he discovered radiocarbon dating in the late 1940s.
It's based on the very simple principle that radioactive isotopes decay at a steady, predictable rate.
The isotope decreased by a small fraction due to the combustion of fossil fuels, among other factors.
However, the quantity of Carbon-14 was nearly doubled in the ’50s and ’60s because of the atomic bomb testings in those decades.
The “Old Wood Problem” is the last flaw of radiocarbon dating that will be elaborated upon here.Since trees can have a lifespan of hundreds of years, its date of death might not even be relatively close to the date the archaeologists are looking for.Thorough research and cautiousness can eliminate accidental contamination and avoidable mistakes.This magnificent technology is the most important innovation in archaeological history.Archaeologists have the most accurate readings they are likely to ever receive!