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Through the use of radiocarbon dating, archaeologists have been able to determine that the majority of the 16 sites were first constructed in the 15th century, although the wide range of dates from the various stages of development had originally made it difficult to figure out the structures beginnings.

DGB-1 is a unique anomaly though in that radiocarbon dating places that particular site's origins back farther to around 1250 AD.

To understand this process we must first understand a little bit about the atoms themselves and how they get their names.

Most carbon atoms have six positively charged protons and six uncharged neutrons.

Since protons and neutrons weigh about the same, the atomic mass of ordinary carbon is 6 6 = 12.

It is called “Carbon-12,” which is abbreviated “C.” The fact that the atom has six protons is what makes it carbon.

The problems Determining the age of a document to find out whether it is authentic is a task influenced by the type of paper on which it has been written, the pressure of the stroke -the amount of ink deposited when the writing was done- or even the technique used.

Until now, document dating methods have been able to indicate whether the writing was relatively new (less than 90 days) or older (over two years), yet this chronological accuracy is insufficient in certain cases, above all in judicial ones.

Then an age can be obtained for the organic material. These are often very tricky questions to answer and frequently arise in judicial contexts.The UPV/EHU's research team --comprising the professor of Analytical Chemistry Rosa María Alonso, Dr Itxaso San Román of the Farmartem group of the Department of Analytical Chemistry, and Dr Luis Bartolomé of the Central Analysis Service of Bizkaia (SGIker)-- has developed the Datink method that allows the period of time the ink may have remained on the paper to be determined and its age to be ascertained.Students will need a 100 'marked' dice (a piece of tape on one side of each) to conduct the "How Old Is That Rock?Roll the Dice & Use Radiometric Dating to Find Out" hands-on geology project.

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TV viewers will remember Kunal as Mohan Bhatnagar from Na Bole Tum Na Maine Kuch Kahan and more recently as Shaurya from Doli Armaanon Ki on Zee TV.

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