A scholar of New St. Andrews College, Idaho, claims to have successfully created an image very like the Shroud of Turin.
He did it with a combination of glass, paint, linen and sunlight - all available to a possible Mediaeval forger.
Wilson put fabric under a glass panel painted with a human face - using white paint - and left it in the sun for a few days.
Wilson found that when a positive image of a man's face was painted onto glass, and left over linen beneath the sun, a color inversion took place,
creating a photo negative.
"Wherever light paint had been applied, the linen remained dark beneath, and wherever the darker shade of linen had been left bare, the image
lightened. In this regard, the image produced is very similar to that of the Turin Shroud," Wilson told Discovery News.
In addition, the rising and setting of the sun - exposing the image from nearly one hundred and eighty degrees - encoded the image on the cloth
This is not to say that the Shroud of Turin definitely is
a forgery, merely that the ingredients and knowledge required to create such an item
did exist during the middle ages - the time frame when forgeries were widespread and 'pardoners' cashed in on the pious nature of pilgrims.