Carbon dating gcse questions become less intimidating guys
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.
So much effort was put into the sample taking procedure." In short, he is convinced that the object dates from the 14th Century.
And yet that doesn't take away from the shroud's power to move people, he adds.
A child mummy is found high in the Andes and the archaeologist says the child lived more than 2,000 years ago.
How do scientists know how old an object or human remains are?
Holes in wrists Mr Wilson believes the type of weave used is more consistent with ancient than medieval times and that the medical evidence is compelling.
At an archaeological dig, a piece of wooden tool is unearthed and the archaeologist finds it to be 5,000 years old.
Once that has been completed the carbon dating will be repeated, he says. Prof Gordon Cook, at the Scottish Universities Environmental Research Centre, rejects the idea that the sample may have been irrevocably damaged by human hands.
"Pre-treatment methods should get rid of the contamination," says Dr Cook, a professor of environmental geochemistry and a carbon dating expert.
"Through no fault of the labs the 1988 sample was taken from the most inadvisable place - the top left hand corner," he says.
"Before 1840 the normal process of display was to have the cloth loose and held up by at least three bishops so the corners would have been contaminated." Another doubt raised was that the sample may have been repaired with cotton strands.
Before it went on display, the Archbishop of Turin, Cardinal Severino Poletto, who is responsible for the shroud, signalled the symbolic importance it attaches to the object: "The Holy Shroud Exhibition is a spiritual and religious event, it is neither touristic nor commercial." For his part Bruno Barberis, director of the International Centre of Sindonology in Turin, which is dedicated to the study of the Shroud, suspects the cloth is genuine.