Which isotope is used to perform radiocarbon dating
Prior to the development of radiocarbon dating, it was difficult to tell when an archaeological artifact came from.Unless something was obviously attributable to a specific year -- say a dated coin or known piece of artwork -- then whoever discovered it had to do quite a bit of guesstimating to get a proper age for the item.It takes a certain amount of time for half the atoms in a sample to decay.It then takes the same amount of time for half the remaining radioactive atoms to decay, and the same amount of time for half of those remaining radioactive atoms to decay, and so on. The amount of time it takes for one-half of a sample to decay is called the half-life of the isotope, and it’s given the symbol: It’s important to realize that the half-life decay of radioactive isotopes is not linear.Knowing about half-lives is important because it enables you to determine when a sample of radioactive material is safe to handle.
Plants absorb C-14 during photosynthesis, so C-14 is incorporated into the cellular structure of plants.
For the most part, radiocarbon dating has made a huge difference for archaeologists everywhere, but the process does have a few flaws.
For example, if an object touches some organic material (like, say, your hand), it can test younger than it really is.
But now archaeologists studying, say, the development of agriculture across the continents are able to determine how different societies stacked up against one another throughout the millennia.
Scientists look at half-life decay rates of radioactive isotopes to estimate when a particular atom might decay.
Search for which isotope is used to perform radiocarbon dating:
Also, the larger the sample the better, although new techniques mean smaller samples can sometimes be tested more effectively.