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Carbon-14 is a radioactive isotope produced in the upper atmosphere by cosmic rays and accounts for one in every 10 atoms of carbon in every living organism.When an organism dies, it stops taking in carbon, so the number of carbon-14 atoms decreases with a half-life of about 5730 years – a timescale that makes it ideal for investigating human history.Carbon-14 dating is a way of determining the age of certain archeological artifacts of a biological origin up to about 50,000 years old.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.A new way to carbon-date old samples has been developed by physicists in Italy.Unlike current methods, which involve large and costly laboratory equipment, the new technique can be performed using portable and low-cost equipment.What methods do they use and how do these methods work?

However it is an expensive process which takes place offsite and typically takes six weeks or more which means that an excavation is likely to be over before the important dating information can be obtained.Lifting the barriers Professor Steve Taylor, from the University’s Department of Electrical Engineering and Electronics who is leading the project, said: “It will be a challenge to develop a portable instrument to achieve the required performance, but thanks to this funding we are in a strong position to make a real attempt.” Frank Hargrave, Director of Norton Priory said: “The potential of this new technique is incalculable.Archaeologists will, for the first time, be able to make decisions onsite and within days of sampling.­ ­You probably have seen or read news stories about fascinating ancient artifacts.At an ar­chaeological dig, a piece of wooden tool is unearthed and the archaeologist finds it to be 5,000 years old.

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