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In reply to the discussion: Could ancient earthquake explain Shroud of Turin? [View all]struggle4progress
(126,400 posts)64. Perhaps not: I may just be running my mouth again
The silver sulphate theory, however, seems not to be particularly good for a number of reasons: the exposure would take days of bright sunlight; silver sulphate is only barely soluble in water and appears not at adhere well to such cloth; it would be critical to remove almost all undarkened silver sulphate afterwards, since it would otherwise darken with time; and there's no evidence of medieval artists using such a technique elsewhere
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Well, the accuracy is high enough to state that the shroud certainly is not a 1st century object.
longship
Feb 2014
#20
Whether or not da Vinci ever made use of one of those is still up for debate.
reusrename
Feb 2014
#31
the camera obscura was not a camera in the modern sense, but merely a device
struggle4progress
Feb 2014
#59
The Shroud is of no particular importance to me; it is irrelevant to my theological views; and
struggle4progress
Feb 2014
#70
Carpinteri went off the rails with his piezo-electric-rock-fracture-induced-nuclear-reaction theory
struggle4progress
Feb 2014
#38