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Radiocarbon dating also referred to as carbon dating or carbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbona radioactive isotope of carbon. The method was developed in the late s at the University of Chicago by Willard Libbywho received the Nobel Prize in Chemistry for his work in It is based on the fact that radiocarbon 14 C is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting 14 C combines with atmospheric oxygen to form radioactive carbon dioxidewhich is incorporated into plants by photosynthesis ; animals then acquire 14 C by eating the plants. When the animal or carbon dating fake dies, it stops exchanging carbon with its environment, and from that point onwards the amount of 14 C it contains begins to decrease as the 14 C undergoes radioactive decay.
Whenever the worldview of evolution is questioned, the topic of carbon dating always comes up. Here is how carbon dating works and the assumptions it is based upon. Radiation from the sun strikes the atmosphere of the earth all day long. This energy converts about 21 pounds of nitrogen into radioactive carbon This radioactive carbon 14 slowly decays back into normal, stable nitrogen. Extensive laboratory testing has shown that about half of the C molecules will decay in 5, years.
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Sincescientists have reckoned the ages of many old objects by measuring the amounts of radioactive carbon they contain. New research shows, however, that some estimates based on carbon may have erred by thousands of years. It is too soon to know whether the discovery will seriously upset the estimated dates of events like the arrival of human beings in the Western Hemisphere, scientists said. But it is already clear carbon dating fake the carbon method of dating will have to be recalibrated and corrected in some cases. They arrived at this conclusion by comparing age estimates obtained using two different methods - analysis of radioactive carbon in a sample and determination of the ratio of uranium to thorium in the sample. In some cases, the latter ratio appears to be a much more accurate gauge of age than the customary method of carbon dating, the scientists said.
This is what my born again Christian friend tries to explain to me everytime we talk about evolution. In the past I've held my ground quite firmly on this topic, but as of recently he has made some claims from some "scientific journals" that carbon dating may not be as accurate as thought, and that it is misleading. I have a hard time believing anything he really says about this, but my question comes down to this, how accurate is carbon dating and how sure are we it works? When I was at primary school I learned that you could tell the age of a tree by counting the rings. A slightly more refined version of that lets us verify carbon dating for something like 10, years. Elite Engineer - Note that it's hard to use logic and reason to argue someone out of a position at which they arrived using neither. With that said, however Radiocarbon dating can easily establish that humans have been on the earth for over twenty thousand years, at least twice carbon dating fake long as creationists are willing to allow.
To know if carbon dating is accurate, we would have to know how much carbon was in the atmosphere in the beginning, and also how long it has been increasing, or decreasing. Since no one was there, no one knows for sure. It's like trying to figure out how long a candle has been burning, without knowing the rate at which it burns, or its original size. Living penguins have been carbon dated and the results said that they had died 8, years ago! This is just one of many inaccurate dates given by Carbon dating. The shells of living mollusks have been dated using the carbon 14 method, only to find that the method gave it a date as having been dead for 23, years!