Tag Archives: thermosensitizer

Refining a model: children’s ‘invisible ink’ trick with lemon juice allows thermal imprinting (“scorching”) at a much reduced temperature

  Late addition (July 2019) Please forgive this postscript, correction, “prescript”,  correction, intrusion, added many years later – based on some 350 and more postings here and elsewhere. That’s including some 7 years of my hands-on investigation into image-forming techniques, … Continue reading

Posted in medieval forgery, Shroud of Turin | Tagged , , | 10 Comments