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"This stuff was manipulated - it was coloured on purpose." In the study, he analysed and compared the sample used in the 1988 tests with other samples from the famous cloth.In addition to the discovery of dye, microchemical tests - which use tiny quantities of materials - provided a way to date the shroud.
The dye appeared to have been used to match new yarn to older age-yellowed yarn.
In addition to the madder dye, Rogers found a gum substance that was possibly gum Arabic, and a common mordant, alum.
The author dismisses 1988 carbon-14 dating tests which concluded that the linen sheet was a medieval fake.
The shroud, which bears the faint image of a blood-covered man, is believed by some to be Christ's burial cloth.
Finally, and significantly, Rogers found that vanillin had been depleted from the main body of the Shroud but not from the mended corner.
This could only mean that the carbon dating sample was not representative of the whole cloth and that the cloth was much older.The most plausible explanation for this difference was that material in this area contained threads that had been bleached more efficiently.It was already known from the shroud’s faint variegated appearance that the shroud’s thread was probably bleached before weaving, probably with potash.No splices of this type were observed in the main part of the Shroud.Rogers also found alizarin, a dye produced from Madder root.Gilbert Raes, a textile expert, had first found cotton fibers in 1973.Tags: Adult Dating, affair dating, sex dating