Was Turin Shroud created in a flash?

Italian researchers have resurrected the idea that the Shroud of Turin’s mysterious image of a Christlike figure could only have been created by a powerful flash of light — but skeptics still aren’t buying it.

Scientists have tussled with believers, and with each other, over the origins of the centuries-old cloth for decades: Many believers think it’s the true image of Jesus, left behind miraculously on his burial cloths after his resurrection. Analyses of the Shroud’s chemical makeup, as well as radiocarbon dating of fiber samples, have led lots of researchers to conclude that the image was painted onto the cloth during the 14th century. But other researchers, sympathetic to the Shroud’s cause, say those tests were faulty.

The Italian studies, conducted at the ENEA Research Center in Frascati, addresses a specific question in Shroud science: Could a burst of radiation have created the coloration seen on the linen? The answer is yes, although the results reported in the latest studies aren’t a perfect match. So does that mean the Shroud image could only have been created by the flash of a miraculous resurrection? The answer is no, despite what you might read on the Web.

Five years of tests

“Sadly, we have seen many claims spread in the Web made by journalist/bloggers that discuss the content of a paper they never read,” lead researcher Paolo Di Lazzaro told me today in an email. “It is obvious that a serious scientific work cannot prove any supernatural action. We have shown that the most advanced technology available today is unable to replicate all the characteristics of the Shroud image. As a consequence, we may argue it appears unlikely a forger may have done this image with technologies available in the Middle Ages or earlier. The probability the Shroud is a medieval fake is really low. In this sense, the Shroud image is still a scientific challenge.”

Di Lazzaro and his colleagues based their conclusions on five years of tests, using an ultraviolet laser apparatus and strips of modern-day linen. They blasted the cloth with UV at different power levels, and reported that they “achieved a very superficial Shroud-like coloration of linen yarns in a narrow range of irradiation parameters.” The best effect depended on laser pulses lasting less than 50 nanoseconds.

“These processes may have played a role in the generation of the body image on the Shroud of Turin,” the researchers report. They don’t go so far as to claim a miracle. But the fact that UV laser blasters didn’t exist in the 13th century, let alone in Jesus’ day, strongly implies that they suspect something out of the ordinary was going on.

Di Lazzaro told me that the tests were not financed by ENEA, which is a government-sponsored research agency, and were conducted outside working hours. “The research was curiosity-driven, the attempt to replicate an image which is considered ‘the impossible image’ due to its very peculiar characteristics,” he said.

Over the years, Di Lazzaro and his colleagues have published a long list of studies, including peer-reviewed papers (see below). The latest studies were presented at a May conference in Frascati and published in November as an ENEA technical report (with a disclaimer saying that the contents didn’t necessarily express ENEA’s opinion). But they didn’t really get traction until this week, just in time for Christmas, thanks to a series of sensationalized British news reports.

via Was Holy Shroud created in a flash? Italian researchers resurrect claim.

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2 Responses to Was Turin Shroud created in a flash?

  1. alfy says:

    A fascinating piece of research which is totally honest about its inconclusive nature. Professor Di Lazzaro,s observation, “The probability the Shroud is a medieval fake is really low. In this sense, the Shroud image is still a scientific challenge.” is one that has to be heeded by all those who think the case was closed after the carbon-14 dating about 20 years ago.

    1. The cloth of the Turin Shroud is covered in what is known as a biopatina, a mixture of human skin oils, bacteria and fungi, accumulated over centuries of handling. This should have been removed chemically before attempting a carbon-14 analysis otherwise it would give an inaccurate result.

    2. Other kinds of tests involving the lignin content of the vegetable (cotton) fibres have given datings to the 1st / 2nd C A.D.

    3. No one has been able to offer an answer to the question, “If a medieval forger wanted to produce a relic to impress credulous pilgrims, why would he choose a negative image which produces a strange, unrealistic owl-like face?” This negative image was produced in the 14 C some 500 years before the invention of photography. What a forger!

    4. Similarly, this forger went to the trouble of obtaining a cloth from the Middle East, or taking a European cloth there, so that it could be contaminated by the pollen grains of plants which grow only in the Palestine region.

    I don’t know whether the cloth is the burial shroud of Jesus or not, but the claim that it is a medieval fake does not stand up to the scientific evidence, as Professor Di Lazzaro explains.

  2. Robin Wilson says:

    In the middle ages life was cheap. A forger might therefore create the shroud by flogging, crucifying and laying out some unfortunate individual in the manner recorded in the gospel. The marks on the cloth would then be automatically ‘correct’ for a crucified figure. I’m not passionately for or against but this seems to me an obvious method for forgery. Has anyone investigated it?

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