Comments that accuse me of being an internet troll or similar will not be published. Kindly read my credo, in place since I began "Science Buzz". This blog is primarily about my scepticism re media-hyped gee-whizz science, especially 'pseudo-science', as previous postings will demonstrate, NOT religion...
Here is a more deeply recessed bas relief
In its simplest form the latter requires writing on paper with lemon juice, allowing to dry and then heating. A sepia brown image is formed.
That “negative” image seems to have been the starting point for much of the supernatural hype, especially when the alleged “encoded 3D” claim (see later) was added later.
Folding has probably caused the overlying film with image to strip off. http://www.theblaze.com/wp-content/uploads/2011/12/jesus-christ-shroud.png see white vertical lines.
(There is another lower-magnification image that makes the same point better, which I have mislaid).
It is redundant to ascribe “encoded” information to the image if the same 3D-transformation can be achieved on burns acquired in 1532.
A colorimetric test and other incidental “quickie” spot and tests does not suffice to identify bilirubin, nor is the pigment bright red, as claimed (it is orange). Nor do people become highly jaundiced as a result of trauma: distance runner's foot-strike haemolysis of blood cells (with consequent degradation of haemoglobin-derived porphyrins to biliverdin and bilirubin) produces mild not gross hyperbilirubinaemia, insufficient to alter the colour of blood.
The holes could just as well have been a nominal attempt to portray blood spots. The biblical account makes no mention of burn holes. If the creator of the Pray manuscript had meant those few holes to represent burn marks, would he not have added flames or wisps of smoke?
It is incredible that modern man should be be speculating and/or fantasizing about miraculous flashes of intense high-energy electromagnetic radiation, indeed coherent laser-beam ultraviolet light . What started this nonsense? Answer: 20th century computer games (converting faint 2D markings to 3D hologram-like images in what might be called upmarket computer games) together with "revealing" details (nails through wrist etc) regardless of whether they agreed with the Biblical account or centuries of received wisdom.
It simply beggars belief that folk should fall for this combination of digital jiggerpokery and special pleading. The Shroud can be viewed as a medieval forerunner of Euro Disney – inspired by the same motive to create a spectacle and through it to flog a dream - and about as genuine as the latter’s ersatz fairytale castle.