Chemist dating

Posted by / 02-Sep-2020 09:55

He was granted a sabbatical in 1968 to pursue post-graduate studies in archaeology.During his career Rogers published over forty peer-reviewed papers on chemistry.Willard Libby (1908–1980), a professor of chemistry at the University of Chicago, began the research that led him to radiocarbon dating in 1945.He was inspired by physicist Serge Korff (1906–1989) of New York University, who in 1939 discovered that neutrons were produced during the bombardment of the atmosphere by cosmic rays.Rogers claimed that under the microscope he could see the undyed linen fibers, the cotton fibers and the dye on the cotton fibers.Because he knew he had terminal cancer he contacted his friend and fellow STURP researcher Barrie Schwortz to record interviews, etc.This was possible because linen is strongly resistant to dyes but cotton is not.Rogers claimed that the repair had gone undetected because it was expertly done, there was no record of it, none of the STURP team were textile experts, and the area had not previously been a major focus of any major Shroud researchers' attention because it was outside the image area.

Upon examining the fibers under a microscope, however, he concluded that, as they had hypothesized, a cotton patch had been woven into the linen fibers and then dyed to match the color of the linen.Schwortz reexamined false-color x-ray fluorescent photographs of the Shroud taken by STURP and pointed out that the sample for radiocarbon dating was taken from the only section that showed up green, indicating it had different chemical properties from the rest of the Shroud, but no one had previously paid attention to the color difference because the green portion is from a section that does not contain part of the image.In December 2008 the Discovery Channel in the United States presented a documentary titled Unwrapping the Shroud: New Evidence containing a detailed explanation of the repair and footage of Schwortz and of Rogers discussing their new findings.The cellulose fibers of the shroud are coated with a thin carbohydrate layer of starch fractions, various sugars, and other impurities. Rogers and Anna Arnoldi, in a joint paper of 2003 proposed that amines from a recently deceased human body may have undergone Maillard reactions with this carbohydrate layer within a reasonable period of time, before liquid decomposition products stained or damaged the cloth.The gases produced by a dead body are extremely reactive chemically and within a few hours, in an environment such as a tomb, a body starts to produce heavier amines in its tissues such as putrescine and cadaverine.

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He participated in ongoing discussions with the Shroud Science Group; a group of about 100 scientists, historians and archeologist who continue to study the Shroud of Turin.