Impurities in there other gases we need to get rid of those so that when we measure the radio carbon content we just are measuring the c o 2 gas radiocarbon dating literally relies on the fallout from the events that took place from 1952 to 1963. 1 fire. Above ground atomic testing between the United States in the soviet union we basically doubled the radio carbon concentration in the atmosphere and what does that mean then for organisms when you have a spike in radio carbon in the atmosphere what it did do is give them all the unique chemical fingerprint in their tissues all these photosynthetic organisms trees grasses that sort of thing are taking in c o 2 some of it having carbon 14 in it and in the animals that eat that then also take on that radio carbon signature look there it is you can actually see its freezing down on the. Right side so now were going to do is torch it off and have the final the final product. Is from bring this to them and you do this individually for each sa